Non-Cochrane · intervention · PM41739420

Efficacy and Harms of Opioid Analgesics for Acute Pain: Overview of Systematic Reviews and Meta-analyses.

Mathieson Stephanie, Zadro Joshua R, Narayan Sujita W, et al. · Drugs · 2026 · PubMed · doi:10.1007/s40265-026-02284-3

Findings

190 findings

Population
Children and adults with acute abdominal painOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · acute pain condition
MD -18.4 [-31.9, -5]
High
12 studies · 1596 participants
Children and adults with acute abdominal painOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Timepoint not reported · acute pain condition · Source review Gavriilidis 2019 (age 12 years and older); morphine, tramadol, pethidine, papaveretum
MD -17.6 [-25, -10.3]
GRADE not reported
12 studies · 1314 participants
Children and adults with acute abdominal painOpioid analgesicsPlacebo or no active treatmentAdverse events (incidence of events)
Long term (>48 h) · acute pain condition · Source review Poonai 2014 (children); IV morphine or oxycodone, incidence of events 11/232 vs 0/240; pooled by the overview from raw data
RD 0.05 [0.02, 0.07]
GRADE not reported
6 studies · 472 participants
Children and adults with acute abdominal painOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · acute pain condition · Source review Poonai 2014 (children); morphine or oxycodone, IV 0.1 or 0.15 mg/kg single dose
MD -19.6 [-40.37, 1.16]
GRADE not reported
5 studies · 282 participants
Surgical patients with morphine-induced pruritus (acute pain)Opioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · acute pain condition
MD -2.2 [-3.7, -0.7]
Moderate
Downgraded: imprecision
5 studies · 284 participants
Surgical patients with morphine-induced pruritus (acute pain)Opioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · acute pain condition
MD -7.9 [-15.2, -0.6]
High
9 studies · 424 participants
Surgical patients with morphine-induced pruritus (acute pain)Opioid analgesicsPlacebo or no active treatmentAdverse event: somnolence
Intermediate term (>6 to <=48 h) · acute pain condition · Source review Du 2013; butorphanol IV, intrathecal or epidural; 4/68 vs 5/55
RR 0.71 [0.22, 2.37]
GRADE not reported
3 studies
Surgical patients with morphine-induced pruritus (acute pain)Opioid analgesicsPlacebo or no active treatmentAdverse event: dizziness
Intermediate term (>6 to <=48 h) · acute pain condition · Source review Du 2013; butorphanol IV, intrathecal or epidural; 20/175 vs 13/136
RR 2.45 [0.35, 17.14]
GRADE not reported
5 studies
Surgical patients with morphine-induced pruritus (acute pain)Opioid analgesicsPlacebo or no active treatmentAdverse event: respiratory depression
Intermediate term (>6 to <=48 h) · acute pain condition · Source review Du 2013; butorphanol IV, intrathecal or epidural; 9/244 vs 11/210
RR 0.71 [0.31, 1.63]
GRADE not reported
10 studies
Women with acute postpartum painOpioid analgesicsPlacebo or no active treatmentAdverse event: vomiting
Timepoint not reported · acute pain condition · Source review Huang 2022 (caesarean); sufentanil in spinal anaesthesia, dose not reported, 59/250 vs 53/253
RR 1.04 [0.75, 1.44]
GRADE not reported
8 studies
Women with acute postpartum painOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · acute pain condition
MD -4 [-13.6, 5.6]
Low
Downgraded: risk of bias, imprecision
2 studies · 281 participants
Women with acute postpartum painOpioid analgesicsPlacebo or no active treatmentAdverse event: hypotension
Timepoint not reported · acute pain condition · Source review Huang 2022 (caesarean); sufentanil in spinal anaesthesia, dose not reported, 72/129 vs 69/126
RR 1.03 [0.87, 1.22]
GRADE not reported
4 studies
Women with acute postpartum painOpioid analgesicsPlacebo or no active treatmentAdverse event: pruritus
Timepoint not reported · acute pain condition · Source review Huang 2022 (caesarean); sufentanil in spinal anaesthesia, dose not reported, 90/225 vs 23/228
RR 5.25 [1.9, 14.49]
GRADE not reported
8 studies
Women with acute postpartum painOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Short term (>3 to <=6 h) · acute pain condition · Source review Deussen 2020; oral codeine 60 mg up to 2 doses, maternal AEs, 21/78 vs 18/63
RR 0.95 [0.54, 1.67]
GRADE not reported
3 studies · 141 participants
Women with acute postpartum painOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · acute pain condition
MD -6.6 [-12.2, -1]
Moderate
Downgraded: imprecision
3 studies · 395 participants
Women with acute postpartum painOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Short term (>3 to <=6 h) · acute pain condition · Source review Deussen 2020; oral codeine any dose, maternal AEs, 48/109 vs 21/79
RR 1.59 [0.99, 2.55]
GRADE not reported
3 studies · 188 participants
Women with acute postpartum painOpioid analgesicsPlacebo or no active treatmentAdverse event: nausea
Timepoint not reported · acute pain condition · Source review Huang 2022 (caesarean); sufentanil in spinal anaesthesia, dose not reported, 15/256 vs 27/253
RR 0.61 [0.33, 1.11]
GRADE not reported
8 studies
Women with acute postpartum painOpioid analgesicsPlacebo or no active treatmentPain relief: participants with at least 50% maximum pain relief
Short term (>3 to <=6 h) · acute pain condition · Source review Deussen 2020; oral codeine, less than 120 mg
RR 1.26 [0.99, 1.61]
GRADE not reported
5 studies · 299 participants
Women with acute postpartum painOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Short term (>3 to <=6 h) · acute pain condition
RR 1.7 [0.9, 3.4]
Moderate
Downgraded: imprecision
7 studies · 376 participants
Women with acute postpartum painOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · acute pain condition
MD -2 [-3.6, -0.4]
High
3 studies · 426 participants
Women with acute postpartum painOpioid analgesicsPlacebo or no active treatmentAdverse event: shivering
Timepoint not reported · acute pain condition · Source review Huang 2022 (caesarean); sufentanil in spinal anaesthesia, dose not reported, 23/154 vs 45/154
RR 0.58 [0.27, 1.26]
GRADE not reported
5 studies
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentAdverse event: drowsiness
Timepoint not reported · post-surgical · Source review Miroshnychenko 2023 (age 12 years and older); oral codeine 60 mg + paracetamol 600 to 650 mg
RD 6.22 [0.58, 18.2]
GRADE not reported
Studies not reported
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentAdverse event: dizziness
Timepoint not reported · post-surgical · Source review Miroshnychenko 2023 (age 12 years and older); oral oxycodone 5 mg or codeine 60 mg
RD 7.73 [0.93, 21.83]
GRADE not reported
Studies not reported
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · post-surgical · Source review Abdel Shaheed 2019; codeine 15 or 30 mg + ibuprofen 200 or 400 mg, single dose
MD -12.7 [-18.5, -6.9]
GRADE not reported
3 studies · 211 participants
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentPain relief (Likert 0 to 4)
Short term (>3 to <=6 h) · post-surgical · Source review Miroshnychenko 2023; oral oxycodone 10 mg + paracetamol 650 mg
MD 1.15 [0.67, 1.62]
GRADE not reported
5 studies
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentAdverse event: nausea vomiting
Timepoint not reported · post-surgical · Source review Miroshnychenko 2023 (age 12 years and older); oral oxycodone 5 mg or codeine 60 mg
RD 8.55 [-2.87, 33.08]
GRADE not reported
Studies not reported
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentAdverse event: dizziness
Timepoint not reported · post-surgical · Source review Miroshnychenko 2023 (age 12 years and older); oral codeine 60 mg + paracetamol 600 to 650 mg
RD 3.76 [0.25, 9.95]
GRADE not reported
Studies not reported
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Immediate term (<=3 h) · post-surgical
RD 0 [-0.2, 0.2]
Low
Downgraded: imprecision
1 study · 20 participants
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentAdverse event: headache
Timepoint not reported · post-surgical · Source review Miroshnychenko 2023 (age 12 years and older); oral tramadol 37.5 mg + paracetamol 325 mg
RD -3.55 [-4.88, 2.84]
GRADE not reported
Studies not reported
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentPain relief (Likert 0 to 4)
Short term (>3 to <=6 h) · post-surgical · Source review Miroshnychenko 2023; oral oxycodone 5 mg or codeine 60 mg
MD 0.1 [-0.06, 0.25]
GRADE not reported
7 studies
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · post-surgical
MD -10.9 [-13.2, -8.5]
Low
Downgraded: risk of bias, inconsistency
9 studies · 1754 participants
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentAdverse event: constipation
Timepoint not reported · post-surgical · Source review Miroshnychenko 2023 (age 12 years and older); oral codeine 60 mg + paracetamol 600 to 650 mg
RD -0.09 [-0.89, 28.94]
GRADE not reported
Studies not reported
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · post-surgical
MD -19.5 [-25, -14]
Moderate
Downgraded: risk of bias
9 studies · 1159 participants
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentAdverse event: nausea vomiting
Timepoint not reported · post-surgical · Source review Miroshnychenko 2023 (age 12 years and older); oral tramadol 37.5 mg + paracetamol 325 mg
RD -2.42 [-6.07, 6.03]
GRADE not reported
Studies not reported
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentAdverse event: nausea vomiting
Timepoint not reported · post-surgical · Source review Miroshnychenko 2023 (age 12 years and older); oral oxycodone 10 mg + paracetamol 650 mg
RD 15.08 [4.64, 30.15]
GRADE not reported
Studies not reported
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Long term (>48 h) · post-surgical
MD -13.9 [-21.3, -6.5]
High
3 studies · 833 participants
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentAdverse event: headache
Timepoint not reported · post-surgical · Source review Miroshnychenko 2023 (age 12 years and older); oral oxycodone 5 mg or codeine 60 mg
RD -2.08 [-4.31, 5.16]
GRADE not reported
Studies not reported
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · post-surgical
MD -15.1 [-20.5, -9.8]
Moderate
Downgraded: risk of bias
12 studies · 1899 participants
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentAdverse event: dizziness
Timepoint not reported · post-surgical · Source review Miroshnychenko 2023 (age 12 years and older); oral oxycodone 10 mg + paracetamol 650 mg
RD 6.82 [2.07, 14.73]
GRADE not reported
Studies not reported
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentAdverse event: dizziness
Timepoint not reported · post-surgical · Source review Miroshnychenko 2023 (age 12 years and older); oral tramadol 37.5 mg + paracetamol 325 mg
RD 1.1 [-1.93, 8.64]
GRADE not reported
Studies not reported
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentAdverse event: headache
Timepoint not reported · post-surgical · Source review Miroshnychenko 2023 (age 12 years and older); oral codeine 60 mg + paracetamol 600 to 650 mg
RD -1.08 [-2.63, 1.35]
GRADE not reported
Studies not reported
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentPain relief (Likert 0 to 4)
Short term (>3 to <=6 h) · post-surgical · Source review Miroshnychenko 2023; oral codeine 60 mg + paracetamol 600 to 650 mg
MD 0.48 [0.33, 0.63]
GRADE not reported
12 studies
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentAdverse event: nausea vomiting
Timepoint not reported · post-surgical · Source review Miroshnychenko 2023 (age 12 years and older); oral codeine 60 mg + paracetamol 600 to 650 mg
RD 4.99 [0.08, 12.1]
GRADE not reported
Studies not reported
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentAdverse event: headache
Timepoint not reported · post-surgical · Source review Miroshnychenko 2023 (age 12 years and older); oral oxycodone 10 mg + paracetamol 650 mg
RD 1.03 [-4.38, 13.45]
GRADE not reported
Studies not reported
Adults and adolescents with acute pain after dental surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · post-surgical · Source review Abdel Shaheed 2019; codeine 15 or 30 mg + ibuprofen 200 or 400 mg, single dose
MD -4.3 [-11.6, 3]
GRADE not reported
3 studies · 155 participants
Adults and children with acute musculoskeletal pain (includes sciatica)Opioid analgesicsPlacebo or no active treatmentDisability
Long term (>48 h) · acute pain condition · Source review Jones 2024; oral opioids, any dose (N = 233 + 183)
MD -5.8 [-13.7, 2.1]
GRADE not reported
2 studies · 416 participants
Adults and children with acute musculoskeletal pain (includes sciatica)Opioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · acute pain condition
MD -8.9 [-13.5, -4.3]
Moderate
Downgraded: inconsistency
7 studies · 1080 participants
Adults and children with acute musculoskeletal pain (includes sciatica)Opioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · acute pain condition · Single-dose IV morphine for sciatica
MD -42.5 [-49.9, -35.1]
Moderate
Downgraded: imprecision
1 study · 197 participants
Adults and children with acute musculoskeletal pain (includes sciatica)Opioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Timepoint not reported · acute pain condition · Source review Jones 2024; oral opioids, any dose, 659/1858 vs 36/1063; printed as RD 14.3% (95% CI 8.3% to 20.4%)
RD 0.143 [0.083, 0.204]
GRADE not reported
11 studies · 2921 participants
Adults and children with acute musculoskeletal pain (includes sciatica)Opioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Timepoint not reported · acute pain condition · Source review Jones 2024; oral opioids in children, 48/239 vs 10/154; printed as RD 10.4% (95% CI 0.6% to 21.4%)
RD 0.104 [0.006, 0.214]
GRADE not reported
3 studies · 393 participants
Adults and children with acute musculoskeletal pain (includes sciatica)Opioid analgesicsPlacebo or no active treatmentDisability
Intermediate term (>6 to <=48 h) · acute pain condition · Source review Jones 2024; oral opioids, any dose (N = 129 + 79)
MD -6.2 [-17.8, 5.4]
GRADE not reported
2 studies · 208 participants
Adults and children with acute musculoskeletal pain (includes sciatica)Opioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Timepoint not reported · acute pain condition
RD 0.1 [0, 0.2]
High
9 studies · 2193 participants
Children with acute pain after myringotomyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · post-surgical
MD -15 [-19.6, -10.4]
Moderate
Downgraded: imprecision
1 study · 260 participants
Women with acute pain after hysterectomyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · post-surgical
MD -12.8 [-24.4, -1.3]
Moderate
Downgraded: risk of bias
7 studies · 487 participants
Women with acute pain after hysterectomyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · post-surgical
MD 0.6 [-7, 8.2]
Moderate
Downgraded: imprecision
2 studies · 168 participants
Women with acute pain after hysterectomyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · post-surgical
MD -6.3 [-11, -1.7]
Low
Downgraded: risk of bias, imprecision
3 studies · 289 participants
Women with acute pain after hysterectomyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Long term (>48 h) · post-surgical
MD -0.2 [-7.9, 7.5]
Very low
Downgraded: risk of bias, imprecision
1 study · 79 participants
Post surgical: MixedOpioid analgesics (any opioid, dose, route or regimen)Placebo or no active treatmentSerious adverse events
Short term (>3 to <=6 h)
RD -0.0 [-0.0, 0.0]
Low
Downgraded: risk of bias, imprecision
5 studies · 604 participants
Post surgical: MixedOpioid analgesics (any opioid, dose, route or regimen)Placebo or no active treatmentAdverse events leading to study withdrawal
Intermediate term (>6 to <=48 h)
RD 0.0 [-0.0, 0.0]
Very low
Downgraded: risk of bias, imprecision, publication bias
2848 participants
People with acute pain after H-uvulopalatopharyngoplasty for sleep apneaOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · post-surgical
MD 0 [-0.3, 0.3]
Moderate
Downgraded: imprecision
1 study · 260 participants
People with acute pain after H-uvulopalatopharyngoplasty for sleep apneaOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · post-surgical
MD 0 [-0.3, 0.3]
Moderate
Downgraded: imprecision
1 study · 260 participants
People with acute pain after H-uvulopalatopharyngoplasty for sleep apneaOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · post-surgical
MD -12.7 [-22.7, -2.8]
Moderate
Downgraded: imprecision
1 study · 260 participants
Adults with acute traumatic limb painOpioid analgesicsPlacebo or no active treatmentSerious adverse events
Immediate term (<=3 h) · acute pain condition
RD 0 [0, 0]
Moderate
Downgraded: imprecision
1 study · 142 participants
Adults with acute traumatic limb painOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · acute pain condition
MD -12 [-19, -5]
Moderate
Downgraded: imprecision
1 study · 144 participants
Adults with acute traumatic limb painOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Immediate term (<=3 h) · acute pain condition
RR 3 [1.9, 4.8]
Moderate
Downgraded: imprecision
1 study · 144 participants
Adults with acute pain after spinal orthopaedic surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · post-surgical
MD -10 [-12.5, -7.5]
Low
Downgraded: imprecision
1 study · 70 participants
Adults with acute pain after spinal orthopaedic surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · post-surgical
MD -10 [-12.5, -7.5]
Moderate
Downgraded: imprecision
1 study · 150 participants
Adults with acute pain after spinal orthopaedic surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · post-surgical
MD -10 [-12.5, -7.5]
Low
Downgraded: imprecision
1 study · 70 participants
People with acute pain after cardiac surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · post-surgical
MD -14 [-23.8, -4.2]
Very low
Downgraded: risk of bias, imprecision
2 studies · 83 participants
People with acute pain after cardiac surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · post-surgical
MD -8.8 [-15.2, -2.4]
Moderate
Downgraded: imprecision
7 studies · 360 participants
People with acute pain after cardiac surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · post-surgical
MD -12.5 [-29.2, 4.2]
Low
Downgraded: imprecision
2 studies · 83 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse event: pruritus
Timepoint not reported · post-surgical · Source review Viscusi 2016; fentanyl iontophoretic transdermal system 40 mcg; 29/475 vs 1/316; pooled by the overview from raw data
RR 19.29 [2.64, 140.91]
GRADE not reported
3 studies · 791 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse event: urinary retention
Timepoint not reported · post-surgical · Source review Viscusi 2016; fentanyl iontophoretic transdermal system 40 mcg; 13/475 vs 2/316; pooled by the overview from raw data
RR 4.32 [0.98, 19.03]
GRADE not reported
3 studies · 791 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse event: dizziness
Timepoint not reported · post-surgical · Source review Viscusi 2016; fentanyl iontophoretic transdermal system 40 mcg; 13/475 vs 4/316; pooled by the overview from raw data
RR 2.16 [0.71, 6.57]
GRADE not reported
3 studies · 791 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse event: anaemia
Timepoint not reported · post-surgical · Source review Viscusi 2016; fentanyl iontophoretic transdermal system 40 mcg; 16/475 vs 2/316; pooled by the overview from raw data
RR 5.32 [1.23, 22.99]
GRADE not reported
3 studies · 791 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Timepoint not reported · post-surgical · Source review Moore 2015 (CD011407); oral codeine 30 or 60 mg + paracetamol (any strength), single dose
RR 1.4 [1.2, 1.6]
GRADE not reported
Studies not reported
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentPain relief: participants with at least 50% maximum pain relief
Short term (>3 to <=6 h) · post-surgical · Source review Derry 2015; oral codeine 25.6 to 60 mg (high dose) + ibuprofen 400 mg, single dose
RR 4.09 [2.82, 5.93]
GRADE not reported
4 studies · 443 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse event: vomiting
Timepoint not reported · post-surgical · Source review Viscusi 2016; fentanyl iontophoretic transdermal system 40 mcg; 59/475 vs 20/316; pooled by the overview from raw data
RR 1.96 [1.21, 3.19]
GRADE not reported
3 studies · 791 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentPain relief: participants with at least 50% maximum pain relief
Short term (>3 to <=6 h) · post-surgical · Source review Moore 2015 (CD008659); Oral tramadol 100 mg, single dose (7 trials)
RR 3.8 [2.4, 5.8]
GRADE not reported
7 studies · 578 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentSerious adverse events
Short term (>3 to <=6 h) · post-surgical · Pooled by the overview from raw data; Derry 2015, codeine up to 60 mg + ibuprofen 400 mg, single dose, 0/276 vs 0/167
RD 0 [0, 0]
GRADE not reported
4 studies · 443 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Timepoint not reported · post-surgical
RR 1.4 [1.2, 1.6]
Moderate
Downgraded: publication bias
82 studies · 7995 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Timepoint not reported · post-surgical · Source review Moore 2015 (CD011407); oral oxycodone 5 mg + paracetamol 325 mg, single dose
RR 1.6 [1.15, 2.05]
GRADE not reported
Studies not reported
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse events leading to study withdrawal
Timepoint not reported · post-surgical · Source review Derry 2015; codeine up to 30 mg + ibuprofen up to 400 mg, single dose, 0/610 vs 0/167; pooled by the overview from raw data
RD 0 [0, 0]
GRADE not reported
777 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse event: nausea
Timepoint not reported · post-surgical · Source review Viscusi 2016; fentanyl iontophoretic transdermal system 40 mcg; 183/475 vs 69/316; pooled by the overview from raw data
RR 1.76 [1.39, 2.24]
GRADE not reported
3 studies · 791 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Timepoint not reported · post-surgical · Source review Moore 2015 (CD011407); oral oxycodone 5 mg + ibuprofen 100 mg, single dose
RR 0.9 [0.65, 1.15]
GRADE not reported
Studies not reported
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · post-surgical
MD -2.5 [-8.5, 3.4]
Low
Downgraded: risk of bias, imprecision
3 studies · 713 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Timepoint not reported · post-surgical · Source review Moore 2015 (CD011407); oral codeine 60 mg + paracetamol 600/650 mg, single dose
RR 1.6 [1.3, 1.9]
GRADE not reported
Studies not reported
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentPain relief: participants with at least 50% maximum pain relief
Short term (>3 to <=6 h) · post-surgical · Source review Moore 2015 (CD008659); Oral tramadol 75 mg + paracetamol 650 mg, single dose
RR 12 [6.4, 21]
GRADE not reported
5 studies · 679 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Timepoint not reported · post-surgical · Source review Moore 2015 (CD011407); oral codeine 26 to 60 mg + ibuprofen 400 mg, single dose
RR 1.2 [0.75, 1.65]
GRADE not reported
Studies not reported
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse event: erythema
Timepoint not reported · post-surgical · Source review Viscusi 2016; fentanyl iontophoretic transdermal system 40 mcg; 67/475 vs 7/316; pooled by the overview from raw data
RR 6.37 [2.96, 13.69]
GRADE not reported
3 studies · 791 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse event: headache
Timepoint not reported · post-surgical · Source review Viscusi 2016; fentanyl iontophoretic transdermal system 40 mcg; 41/475 vs 21/316; pooled by the overview from raw data
RR 1.3 [0.78, 2.16]
GRADE not reported
3 studies · 791 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentPain relief: participants with at least 50% maximum pain relief
Short term (>3 to <=6 h) · post-surgical · Source review Moore 2015 (CD008659); Oral codeine 60 mg + paracetamol 800/1000 mg, single dose
RR 6.3 [2.9, 14]
GRADE not reported
30 studies · 192 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentPain relief: participants with at least 50% maximum pain relief
Short term (>3 to <=6 h) · post-surgical · Source review Moore 2015 (CD008659); Oral tramadol 50 mg, single dose
RR 2.9 [1.6, 5.2]
GRADE not reported
6 studies · 471 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse event: hypotension
Timepoint not reported · post-surgical · Source review Viscusi 2016; fentanyl iontophoretic transdermal system 40 mcg; 11/475 vs 2/316; pooled by the overview from raw data
RR 3.66 [0.82, 16.4]
GRADE not reported
3 studies · 791 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentPain relief: participants with at least 50% maximum pain relief
Short term (>3 to <=6 h) · post-surgical · Source review Moore 2015 (CD008659); Oral codeine 60 mg, single dose
RR 1.5 [1.3, 1.7]
GRADE not reported
33 studies · 2411 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · post-surgical
MD -6 [-8, -4]
Moderate
Downgraded: risk of bias
2 studies · 673 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse event: insomnia
Timepoint not reported · post-surgical · Source review Viscusi 2016; fentanyl iontophoretic transdermal system 40 mcg; 15/475 vs 16/316; pooled by the overview from raw data
RR 0.62 [0.31, 1.24]
GRADE not reported
3 studies · 791 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Timepoint not reported · post-surgical · Source review Moore 2015 (CD011407); oral oxycodone 5 mg, single dose
RR 1.1 [0.8, 1.6]
GRADE not reported
Studies not reported
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse event: back pain
Timepoint not reported · post-surgical · Source review Viscusi 2016; fentanyl iontophoretic transdermal system 40 mcg; 7/475 vs 10/316; pooled by the overview from raw data
RR 0.47 [0.18, 1.21]
GRADE not reported
3 studies · 791 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentPain relief: participants with at least 50% maximum pain relief
Short term (>3 to <=6 h) · post-surgical · Source review Moore 2015 (CD008659); Oral tramadol 100 mg, single dose (4 trials)
RR 3.2 [1.8, 5.6]
GRADE not reported
4 studies · 304 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentPain relief: participants with at least 50% maximum pain relief
Short term (>3 to <=6 h) · post-surgical · Source review Moore 2015 (CD008659); Oral oxycodone 10 mg + paracetamol 1000 mg, single dose
RR 4.9 [3.2, 7.6]
GRADE not reported
2 studies · 289 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentPain relief: participants with at least 50% maximum pain relief
Short term (>3 to <=6 h) · post-surgical · Source review Moore 2015 (CD008659); Oral tramadol 150 mg, single dose
RR 3.5 [2.4, 4.9]
GRADE not reported
5 studies · 371 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Timepoint not reported · post-surgical · Source review Moore 2015 (CD011407); oral oxycodone 10 mg + paracetamol 650 mg, single dose
RR 1.8 [1.34, 2.25]
GRADE not reported
Studies not reported
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Timepoint not reported · post-surgical · Source review Derry 2015; oral codeine 26.5 to 60 mg + ibuprofen 400 mg, single dose, 78/276 vs 31/167
RR 1.18 [0.84, 1.66]
GRADE not reported
4 studies · 443 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Timepoint not reported · post-surgical · Source review Moore 2015 (CD011407); oral codeine 60 mg, single dose
RR 1.3 [0.9, 1.7]
GRADE not reported
Studies not reported
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Timepoint not reported · post-surgical · Source review Moore 2015 (CD011407); oral oxycodone 10 mg + paracetamol 1000 mg, single dose
RR 1.6 [1.25, 1.95]
GRADE not reported
Studies not reported
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentPain relief: participants with at least 50% maximum pain relief
Short term (>3 to <=6 h) · post-surgical · Source review Moore 2015 (CD008659); Oral codeine 26 to 60 mg + ibuprofen 400 mg, single dose
RR 4.1 [2.8, 5.9]
GRADE not reported
4 studies · 443 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Timepoint not reported · post-surgical · Source review Moore 2015 (CD011407); oral dihydrocodeine 30 mg, single dose
RR 3.4 [1.2, 9.8]
GRADE not reported
Studies not reported
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse events leading to study withdrawal
Timepoint not reported · post-surgical · Source review Viscusi 2016; fentanyl iontophoretic transdermal system 40 mcg, 77/1763 vs 4/147; pooled by the overview from raw data
RR 1.61 [0.6, 4.32]
GRADE not reported
7 studies · 1910 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentPain relief: participants with at least 50% maximum pain relief
Short term (>3 to <=6 h) · post-surgical · Source review Moore 2015 (CD008659); Oral oxycodone 5 mg + ibuprofen 400 mg, single dose
RR 3.6 [2.6, 5.1]
GRADE not reported
3 studies · 603 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentPain relief: participants with at least 50% maximum pain relief
Short term (>3 to <=6 h) · post-surgical · Source review Moore 2015 (CD008659); Oral oxycodone 10 mg + paracetamol 650 mg, single dose
RR 3.9 [2.9, 5.2]
GRADE not reported
10 studies · 1043 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentPain relief: participants with at least 50% maximum pain relief
Short term (>3 to <=6 h) · post-surgical · Source review Moore 2015 (CD008659); Oral codeine 60 mg + paracetamol 600/650 mg, single dose
RR 2.6 [2.2, 3.2]
GRADE not reported
17 studies · 1413 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse event: pyrexia
Timepoint not reported · post-surgical · Source review Viscusi 2016; fentanyl iontophoretic transdermal system 40 mcg; 41/475 vs 33/316; pooled by the overview from raw data
RR 0.82 [0.58, 1.28]
GRADE not reported
3 studies · 791 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse event: bradycardia
Immediate term (<=3 h) · post-surgical · Source review Schnabel 2014 (children); nalbuphine IV or IM 3 mg/kg, 0/41 vs 0/40; pooled by the overview from raw data
RD 0 [0, 0]
GRADE not reported
2 studies · 81 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentAdverse event: respiratory depression
Timepoint not reported · post-surgical · Source review Schnabel 2014 (children); nalbuphine IV or IM 3 mg/kg, 0/80 vs 0/77; pooled by the overview from raw data
RD 0 [0, 0]
GRADE not reported
3 studies · 157 participants
People with acute post-surgical pain after mixed surgeriesOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · post-surgical
MD -6 [-7.4, -4.7]
Moderate
Downgraded: risk of bias
10 studies · 1083 participants
Women undergoing medical termination of pregnancyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · procedure-related
MD -15.3 [-31.5, 0.9]
Low
Downgraded: imprecision
3 studies · 87 participants
Women undergoing medical termination of pregnancyOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Immediate term (<=3 h) · procedure-related
RR 0.9 [0.8, 1]
Moderate
Downgraded: imprecision
1 study · 166 participants
Women undergoing medical termination of pregnancyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · procedure-related
MD -5 [-5.9, -4.1]
Moderate
Downgraded: imprecision
1 study · 183 participants
Women undergoing medical termination of pregnancyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · procedure-related
MD -12.9 [-33.2, 7.4]
Low
Downgraded: imprecision
3 studies · 87 participants
People with acute pain after abdominal surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · post-surgical
MD -16.1 [-21.7, -10.4]
Low
Downgraded: risk of bias, inconsistency
3 studies · 479 participants
People with acute pain after abdominal surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Long term (>48 h) · post-surgical
MD -28.2 [-28.5, -27.9]
Low
Downgraded: imprecision
1 study · 90 participants
People with acute pain after abdominal surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · post-surgical
MD -30.6 [-34.8, -26.4]
Very low
Downgraded: risk of bias, imprecision, inconsistency
2 studies · 290 participants
People with acute pain after abdominal surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · post-surgical
MD -24.8 [-28.6, -21]
Very low
Downgraded: risk of bias, imprecision, inconsistency
2 studies · 290 participants
People with acute pain after knee arthroscopyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · post-surgical
MD -8.8 [-14.6, -3.1]
Low
Downgraded: risk of bias, publication bias
14 studies · 478 participants
People with acute pain after knee arthroscopyOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Intermediate term (>6 to <=48 h) · post-surgical
RR 1.2 [0.5, 2.6]
Moderate
Downgraded: imprecision
8 studies · 314 participants
People with acute pain after knee arthroscopyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · post-surgical · Source review Zou 2016; intra-articular morphine 1 mg, single dose
MD -5 [-11.5, 1.4]
GRADE not reported
7 studies · 297 participants
People with acute pain after knee arthroscopyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · post-surgical
MD -34.4 [-80.8, 11.9]
Low
Downgraded: imprecision, publication bias
22 studies · 965 participants
People with acute pain after knee arthroscopyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · post-surgical · Source review AbdelQadir 2021; intrathecal morphine, single dose
MD -20.1 [-29.3, -10.9]
GRADE not reported
4 studies · 111 participants
People with acute pain after knee arthroscopyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · post-surgical · Source review AbdelQadir 2021; intrathecal morphine, single dose
MD -30.2 [-45.7, -14.7]
GRADE not reported
3 studies · 76 participants
People with acute pain after knee arthroscopyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · post-surgical
MD -24 [-25.3, -22.8]
Low
Downgraded: imprecision
3 studies · 96 participants
People with acute pain after knee arthroscopyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · post-surgical · Source review Zeng 2013; intra-articular morphine 1 to 15 mg, single dose
MD -88.9 [-95.2, -82.6]
GRADE not reported
11 studies · 648 participants
People with acute pain after knee arthroscopyOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Intermediate term (>6 to <=48 h) · post-surgical · Source review Zou 2016; intra-articular morphine 1 mg, 13/164 vs 10/150
RR 1.09 [0.51, 2.36]
GRADE not reported
8 studies · 314 participants
People with acute pain after knee arthroscopyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · post-surgical · Source review Zou 2016; intra-articular morphine 1 mg, single dose
MD -9.5 [-11.08, -7.92]
GRADE not reported
7 studies · 297 participants
People with acute pain after knee arthroscopyOpioid analgesicsPlacebo or no active treatmentAdverse event: pruritus
Intermediate term (>6 to <=48 h) · post-surgical · Source review AbdelQadir 2021; intrathecal morphine, 6/86 vs 35/86 as printed
RR 4.82 [2.34, 9.93]
GRADE not reported
5 studies · 172 participants
People with acute pain after knee arthroscopyOpioid analgesicsPlacebo or no active treatmentAdverse event: nausea vomiting
Intermediate term (>6 to <=48 h) · post-surgical · Source review AbdelQadir 2021; 15/71 vs 7/73
RR 2.13 [0.97, 4.69]
GRADE not reported
4 studies · 144 participants
Adults with acute pain after bunionectomyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · post-surgical
MD -18.2 [-23.8, -12.7]
Low
Downgraded: risk of bias, imprecision
1 study · 203 participants
Adults with acute pain after bunionectomyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · post-surgical
MD -9.2 [-11.4, -7.1]
Low
Downgraded: risk of bias, imprecision
1 study · 203 participants
Adults with acute pain after bunionectomyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · post-surgical
MD -20 [-26.1, -13.9]
Low
Downgraded: risk of bias, imprecision
1 study · 203 participants
People with acute pain from dermatological disease (e.g. burns)Opioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · acute pain condition
MD -15.4 [-28.7, -2.1]
Low
Downgraded: imprecision
4 studies · 79 participants
People with acute pain from dermatological disease (e.g. burns)Opioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · acute pain condition
MD 0 [-1.4, 1.4]
Low
Downgraded: imprecision
2 studies · 88 participants
People with acute pain from dermatological disease (e.g. burns)Opioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · acute pain condition
MD -3.3 [-34.3, 27.8]
Low
Downgraded: imprecision
1 study · 32 participants
Women with acute pain after caesarean sectionOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · post-surgical
MD -12.5 [-18.5, -6.5]
Low
Downgraded: imprecision
1 study · 60 participants
Women with acute labour painOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · acute pain condition
MD -4.1 [-4.6, -3.6]
Low
Downgraded: risk of bias, imprecision
3 studies · 399 participants
Women with acute labour painOpioid analgesicsPlacebo or no active treatmentAdverse event: nausea vomiting
Immediate term (<=3 h) · acute pain condition · Source review Smith 2018; IM pethidine 50 or 100 mg, 12/83 vs 8/83
RR 1.47 [0.65, 3.31]
GRADE not reported
2 studies · 166 participants
Adults with acute renal colicOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · acute pain condition
MD -13 [-26.7, 0.7]
Moderate
Downgraded: imprecision
1 study · 100 participants
Women undergoing hysteroscopyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · procedure-related
MD -7.2 [-16.1, 1.7]
Moderate
Downgraded: imprecision
3 studies · 354 participants
Women undergoing hysteroscopyOpioid analgesicsPlacebo or no active treatmentAdverse events (incidence of events)
Timepoint not reported · procedure-related · Source review De Silva 2020; sublingual buprenorphine, IV or oral tramadol, incidence of events 45/245 vs 5/249
Peto OR 7.3 [3.96, 13.47]
GRADE not reported
4 studies · 494 participants
Adults with acute pain after laparoscopic surgery with urinary catheterizationOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · acute pain condition
MD -6.5 [-18.9, 5.9]
Moderate
Downgraded: imprecision
1 study · 137 participants
Adults with acute pain after laparoscopic surgery with urinary catheterizationOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · acute pain condition
MD 0 [-13.1, 13.1]
Moderate
Downgraded: imprecision
1 study · 137 participants
Adults with acute pain after laparoscopic surgery with urinary catheterizationOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · acute pain condition
MD 2 [-10.5, 14.5]
Moderate
Downgraded: imprecision
1 study · 137 participants
Adults with acute pain after limb surgery (great saphenous vein)Opioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · acute pain condition
MD -5 [-14.8, 4.8]
Moderate
Downgraded: imprecision
1 study · 139 participants
Newborns receiving mechanical ventilationOpioid analgesicsPlacebo or no active treatmentSerious adverse events: mortality to discharge
Long term (>48 h) · procedure-related · Source review Bellu 2021 (neonates); mortality to discharge, 14/88 vs 14/90
RR 0.99 [0.52, 1.88]
GRADE not reported
4 studies · 178 participants
Newborns receiving mechanical ventilationOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · procedure-related
MD 0 [-0.3, 0.3]
Moderate
Downgraded: imprecision
1 study · 150 participants
Newborns receiving mechanical ventilationOpioid analgesicsPlacebo or no active treatmentSerious adverse events
Long term (>48 h) · procedure-related
RD 0 [-0.1, 0.1]
Low
Downgraded: risk of bias, imprecision
4 studies · 178 participants
Newborns receiving mechanical ventilationOpioid analgesicsPlacebo or no active treatmentPain: Premature Infant Pain Profile (PIPP) score
Intermediate term (>6 to <=48 h) · procedure-related · Source review Bellu 2021; morphine loading dose 100 mcg/kg plus infusion
MD -6.53 [-9, -4.07]
GRADE not reported
3 studies · 963 participants
People with acute pain after mixed orthopaedic surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · post-surgical
MD -11 [-20.7, -1.3]
Very low
Downgraded: risk of bias, imprecision
1 study · 80 participants
People with acute pain after mixed orthopaedic surgeryOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · post-surgical
MD -3 [-7.9, 1.9]
Low
Downgraded: risk of bias, imprecision
1 study · 120 participants
Children and adults undergoing voiding cystourethrographyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · procedure-related
MD -2.8 [-12.1, 6.5]
Low
Downgraded: imprecision
1 study · 69 participants
People with acute pain after breast surgery (mastectomy, reduction or augmentation)Opioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · post-surgical
MD 5 [-5.1, 15.1]
Low
Downgraded: imprecision
1 study · 50 participants
People with acute pain after breast surgery (mastectomy, reduction or augmentation)Opioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · post-surgical
MD -1.6 [-7.9, 4.7]
Low
Downgraded: imprecision
1 study · 33 participants
People with acute vaso-occlusive pain crisis in sickle cell diseaseOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · acute pain condition
MD 0 [-1.1, 1.1]
Low
Downgraded: imprecision
1 study · 49 participants
Children with acute pain after tonsillectomyOpioid analgesicsPlacebo or no active treatmentPain: Children's Hospital of Eastern Ontario Pain Scale (CHEOPS)
Intermediate term (>6 to <=48 h) · post-surgical · Source review Deng 2024 (children); Fentanyl, dose not reported
MD 1.36 [-0.1, 2.82]
GRADE not reported
Studies not reported
Children with acute pain after tonsillectomyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Intermediate term (>6 to <=48 h) · post-surgical
MD 17.2 [0.6, 33.8]
Low
Downgraded: imprecision
1 study · 30 participants
Children with acute pain after tonsillectomyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · post-surgical · Source review Martinez 2015; IV tramadol 1 mg/kg, 6 of 8 studies single dose
MD -4.14 [-8.07, -0.22]
GRADE not reported
8 studies · 410 participants
Children with acute pain after tonsillectomyOpioid analgesicsPlacebo or no active treatmentPain: Children's Hospital of Eastern Ontario Pain Scale (CHEOPS)
Intermediate term (>6 to <=48 h) · post-surgical · Source review Deng 2024 (children); Tramadol, dose not reported
MD 1.51 [0.86, 2.17]
GRADE not reported
Studies not reported
Children with acute pain after tonsillectomyOpioid analgesicsPlacebo or no active treatmentPain: Children's Hospital of Eastern Ontario Pain Scale (CHEOPS)
Intermediate term (>6 to <=48 h) · post-surgical · Source review Deng 2024 (children); Morphine, dose not reported
MD 2.07 [1, 3.14]
GRADE not reported
Studies not reported
Children with acute pain after tonsillectomyOpioid analgesicsPlacebo or no active treatmentPain: McGrath face scale (FAS)
Intermediate term (>6 to <=48 h) · post-surgical · Source review Deng 2024 (children); Tramadol, dose not reported
Unresolved: the two extractors disagree on this row.
MD 0.3 [-0.89, 0.29]
GRADE not reported
Studies not reported
Children with acute pain after tonsillectomyOpioid analgesicsPlacebo or no active treatmentAdverse event: postoperative complications
Intermediate term (>6 to <=48 h) · post-surgical · Source review Deng 2024 (children); tramadol
RR 1.08 [0.69, 1.68]
GRADE not reported
Studies not reported
Children with acute pain after tonsillectomyOpioid analgesicsPlacebo or no active treatmentAdverse event: postoperative complications
Intermediate term (>6 to <=48 h) · post-surgical · Source review Deng 2024 (children); morphine
RR 0.33 [0.04, 2.85]
GRADE not reported
Studies not reported
People with acute pain after photorefractive keratectomyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Immediate term (<=3 h) · post-surgical
MD -16 [-24.5, -7.5]
Very low
Downgraded: risk of bias, imprecision
1 study · 80 participants
People with acute pain after photorefractive keratectomyOpioid analgesicsPlacebo or no active treatmentPain intensity (continuous, converted to 0-100 scale)
Short term (>3 to <=6 h) · post-surgical
MD -25.5 [-51, 0]
Very low
Downgraded: risk of bias, imprecision
1 study · 80 participants
Adults with acute coronary syndromeOpioid analgesicsPlacebo or no active treatmentSerious adverse events
Short term (>3 to <=6 h) · acute pain condition
RR 1.7 [0.7, 4.4]
Moderate
Downgraded: imprecision
3 studies · 2002 participants
Adults with acute low back painOpioid analgesicsPlacebo or no active treatmentDisability
acute pain condition
No relevant studies reported disability outcomes in the review by Cao 2024
No studies found
0 studies
Adults with acute low back painOpioid analgesicsPlacebo or no active treatmentAdverse events leading to study withdrawal
Long term (>48 h) · acute pain condition
RD 0.1 [0, 0.2]
Low
Downgraded: risk of bias, imprecision
1 study · 277 participants
Adults with acute low back painOpioid analgesicsPlacebo or no active treatmentQuality of life
acute pain condition
No eligible studies reported quality of life outcomes in the review by Cao 2024
No studies found
0 studies
Adults with acute low back painOpioid analgesicsPlacebo or no active treatmentSerious adverse events
Long term (>48 h) · acute pain condition
RD 0 [0, 0]
Low
Downgraded: risk of bias, imprecision
1 study · 277 participants
People with acute pain of mixed conditionsOpioid analgesicsPlacebo or no active treatmentSummed pain intensity difference at 48 minutes (SPID48)
Long term (>48 h) · acute pain condition · Source review Xiao 2017; oral tapentadol IR 75 mg
MD 82.89 [60.62, 105.16]
GRADE not reported
7 studies · 1437 participants
People with acute pain of mixed conditionsOpioid analgesicsPlacebo or no active treatmentSerious adverse events
Long term (>48 h) · acute pain condition
RD 0 [-0.1, 0]
Low
Downgraded: risk of bias, imprecision
2 studies · 555 participants
People with acute pain of mixed conditionsOpioid analgesicsPlacebo or no active treatmentSummed pain intensity difference at 48 minutes (SPID48)
Long term (>48 h) · acute pain condition · Source review Xiao 2017; oral tapentadol IR 100 mg
MD 89.03 [20.06, 158]
GRADE not reported
3 studies · 630 participants
People with acute pain of mixed conditionsOpioid analgesicsPlacebo or no active treatmentQuality of life
acute pain condition
No eligible studies reported quality of life outcomes in the review by Piirainen 2022
No studies found
0 studies
People with acute pain of mixed conditionsOpioid analgesicsPlacebo or no active treatmentSummed pain intensity difference at 48 minutes (SPID48)
Long term (>48 h) · acute pain condition · Source review Xiao 2017; oral tapentadol IR 50 mg
MD 70.76 [49.9, 91.62]
GRADE not reported
6 studies · 1247 participants
People with acute pain of mixed conditionsOpioid analgesicsPlacebo or no active treatmentAdverse events (participants with at least one)
Immediate term (<=3 h) · acute pain condition
RD 0 [-0.1, 0.1]
Low
Downgraded: imprecision
1 study · 33 participants
Neonates with post-operative painOpioid analgesicsPlacebo or no active treatmentSerious adverse events
Long term (>48 h) · post-surgical
RD 0 [-0.1, 0]
Low
Downgraded: imprecision
1 study · 71 participants
Adults with propofol injection painOpioid analgesicsPlacebo or no active treatmentPain: frequency of pain events
Immediate term (<=3 h) · acute pain condition · Source review Bakhtiari 2021; IV tramadol, ketamine, remifentanil, butorphanol, nalbuphine
RR 0.39 [0.28, 0.54]
GRADE not reported
13 studies · 1060 participants
Newborns undergoing therapeutic hypothermiaOpioid analgesicsPlacebo or no active treatmentPain intensity
acute pain condition
Cochrane review (Backe 2022) found 0 studies
No studies found
0 studies
Adults and children undergoing elective craniotomyOpioid analgesicsPlacebo or no active treatmentPain intensity
post-surgical
Cochrane review (Mestdagh 2023) found 0 eligible studies
No studies found
0 studies
Children with chemotherapy-induced severe mucositisOpioid analgesicsPlacebo or no active treatmentPain intensity
acute pain condition
Cochrane review (Walker 2022) found 0 eligible studies
No studies found
0 studies
Adults with acute pain in the prehospital settingOpioid analgesicsPlacebo or no active treatmentPain intensity
acute pain condition
Review (Hyldmo 2024) included 7 trials, 0 eligible
No studies found
0 studies
Adults with acute pain presenting to the emergency departmentOpioid analgesicsPlacebo or no active treatmentPain intensity
acute pain condition
Unresolved: the two extractors disagree on this row.
Review (Payami 2018) included 8 trials, 0 eligible
No studies found
0 studies

Included primary studies 60

Open in Studies
StudyYearAlso included byOutcomes it informs hereTrial data
Abdel Shaheed 2019
Efficacy and Safety of Low-dose Codeine-containing Combination Analgesics for Pain: Systematic Review and Meta-Analysis.
PMID:31318725
2019this review onlynot statednot extracted yet
AbdelQadir 2021
Efficacy and safety of intrathecal morphine in total knee arthroplasty: A systematic review and meta-analysis.
PMID:34714541
2021this review onlynot statednot extracted yet
Albaqami 2023
Buprenorphine for acute post-surgical pain: A systematic review and meta-analysis.
PMID:37032687
2023this review onlynot statednot extracted yet
Alimy 2024
Conservative Treatments in the Management of Acute Painful Vertebral Compression Fractures: A Systematic Review and Network Meta-Analysis.
PMID:39240564
2024this review onlynot statednot extracted yet
Ardila 2024
Perioperative analgesic efficacy and adverse events of fentanyl in dentistry: A systematic review.
PMID:37837245
2024this review onlynot statednot extracted yet
Backe 2022
Pharmacological interventions for pain and sedation management in newborn infants undergoing therapeutic hypothermia.
PMID:36354070
2022this review onlynot statednot extracted yet
Bakhtiari 2021
Pharmacological control of pain during propofol injection: a systematic review and meta-analysis.
PMID:33896305
2021this review onlynot statednot extracted yet
Bellu 2021
Opioids for newborn infants receiving mechanical ventilation.
PMID:33729556
2021this review onlynot statednot extracted yet
Cao 2024
Paracetamol Combination Therapy for Back Pain and Osteoarthritis: A Systematic Review and Meta-Analyses.
PMID:38937394
2024this review onlynot statednot extracted yet
Cozowicz 2018
Opioids for Acute Pain Management in Patients With Obstructive Sleep Apnea: A Systematic Review.
PMID:29958218
2018this review onlynot statednot extracted yet
Davis 2011
Fentanyl for breakthrough pain: a systematic review.
PMID:21797660
2011this review onlynot statednot extracted yet
De Grunt 2024
Parenteral, Non-Intravenous Analgesia in Acute Traumatic Pain-A Narrative Review Based on a Systematic Literature Search.
PMID:38731088
2024this review onlynot statednot extracted yet
De Silva 2020
Analgesia for Office Hysteroscopy: A Systematic Review and Meta-analysis.
PMID:31982584
2020this review onlynot statednot extracted yet
Deeks 2019
Sufentanil 30 µg Sublingual Tablet: A Review in Acute Pain.
PMID:30887417
2019this review onlynot statednot extracted yet
Deng 2024
Comparative Effectiveness of Analgesia for Early Pain Management After Pediatric Tonsillectomy: A Systematic Review and Network…
PMID:39705169
2025this review onlynot statednot extracted yet
Derry 2015
Single dose oral ibuprofen plus codeine for acute postoperative pain in adults.
PMID:25927097
2015this review onlynot statednot extracted yet
Deussen 2020
Relief of pain due to uterine cramping/involution after birth.
PMID:33078388
2020this review onlynot statednot extracted yet
Dhillion 2010
Tramadol/paracetamol fixed-dose combination: a review of its use in the management of moderate to severe pain.
PMID:20701403
2010this review onlynot statednot extracted yet
Du 2013
Butorphanol prevents morphine-induced pruritus without increasing pain and other side effects: a systematic review of randomized…
PMID:23813290
2013this review onlynot statednot extracted yet
Duarte 2019
Morphine in acute coronary syndrome: systematic review and meta-analysis.
PMID:30878985
2019this review onlynot statednot extracted yet
Elango 2021
DOI:10.4103/jpp.jpp_116_21
NRthis review onlynot statednot extracted yet
Garcia-Perdomo 2017
Pharmacologic interventions to treat renal colic pain in acute stone episodes: Systematic review and meta-analysis.
PMID:28651994
2017this review onlynot statednot extracted yet
Gavriilidis 2019
To Use or Not to Use Opioid Analgesia for Acute Abdominal Pain Before Definitive Surgical Diagnosis? A Systematic Review and Network…
PMID:30701004
2019this review onlynot statednot extracted yet
Gounari 2023
Efficacy and safety of parenteral and local application of tramadol in mandibular third molar extraction: a qualitative systematic review…
PMID:37640978
2024this review onlynot statednot extracted yet
Gutierrez 2021
Topical opioid use in dermatologic disease: A systematic review.
PMID:34605133
2021this review onlynot statednot extracted yet
Hanna and Senderovich 2021
Methadone in Pain Management: A Systematic Review.
PMID:32599153
2021this review onlynot statednot extracted yet
Hansen 2012
Intranasal fentanyl in the treatment of acute pain--a systematic review.
PMID:22260169
2012this review onlynot statednot extracted yet
Huang 2022
Sufentanil for Spinal Analgesia during Cesarean Section Delivery: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
PMID:36105787
2022this review onlynot statednot extracted yet
Hyldmo 2024
Inhaled analgesics for the treatment of prehospital acute pain-A systematic review.
PMID:39327650
2024this review onlynot statednot extracted yet
Jackson and Kapp 2011
Pain control in first-trimester and second-trimester medical termination of pregnancy: a systematic review.
PMID:21237336
2011this review onlynot statednot extracted yet
Jones 2024
Opioids for Acute Musculoskeletal Pain: A Systematic Review with Meta-Analysis.
PMID:38451443
2024this review onlynot statednot extracted yet
Joshi 2015
Optimal pain management for radical prostatectomy surgery: what is the evidence?
PMID:26530113
2015this review onlynot statednot extracted yet
Kinoshita 2023
Systemic opioids versus other analgesics and sedatives for postoperative pain in neonates.
PMID:36870076
2023this review onlynot statednot extracted yet
Leppert 2014
Oxycodone/naloxone in the management of patients with pain and opioid-induced bowel dysfunction.
PMID:24020972
2014this review onlynot statednot extracted yet
Luxey 2024
Acute pain management after vaginal delivery with perineal tears or episiotomy.
PMID:38772634
2025this review onlynot statednot extracted yet
Maeßen 2023
Pain management after cardiac surgery via median sternotomy: A systematic review with procedure-specific postoperative pain management…
PMID:37501517
2023this review onlynot statednot extracted yet
Maroni 2023
Fetal, Preterm, and Term Neonate Exposure to Remifentanil: A Systematic Review of Efficacy and Safety.
PMID:37541994
2023this review onlynot statednot extracted yet
Martinez 2015
Effect of combining tramadol and morphine in adult surgical patients: a systematic review and meta-analysis of randomized trials.
PMID:25516276
2015this review onlynot statednot extracted yet
Mestdagh 2023
Pain management after elective craniotomy: A systematic review with procedure-specific postoperative pain management (PROSPECT)…
PMID:37417808
2023this review onlynot statednot extracted yet
Miroshnychenko 2023
Acute Postoperative Pain Due to Dental Extraction in the Adult Population: A Systematic Review and Network Meta-analysis.
PMID:36631957
2023this review onlynot statednot extracted yet
Moore 2015 (CD008659)
Single dose oral analgesics for acute postoperative pain in adults - an overview of Cochrane reviews.
PMID:26414123
2015this review onlynot statednot extracted yet
Moore 2015 (CD011407)
Adverse events associated with single dose oral analgesics for acute postoperative pain in adults - an overview of Cochrane reviews.
PMID:26461263
2015this review onlynot statednot extracted yet
Naghipour 2020
Comparison of Ketamine and Tramadol in Management of Acute Pain; a Systematic Review.
PMID:33134964
2020this review onlynot statednot extracted yet
Payami 2018
matched by author and year (probable)
NRthis review onlynot statednot extracted yet
Payami 2018
Protein-DNA and protein-hormone interactions in prealbumin: a model of the thyroid hormone nuclear receptor?
PMID:201845
1977this review onlynot statednot extracted yet
Piirainen 2022
Epidural Oxycodone for Acute Pain.
PMID:35631469
2022this review onlynot statednot extracted yet
Poonai 2014
Opioid analgesia for acute abdominal pain in children: A systematic review and meta-analysis.
PMID:25377394
2014this review onlynot statednot extracted yet
Renner 2010
Pain control in first-trimester surgical abortion: a systematic review of randomized controlled trials.
PMID:20399943
2010this review onlynot statednot extracted yet
Schnabel 2014
Nalbuphine for postoperative pain treatment in children.
PMID:25079857
2014this review onlynot statednot extracted yet
Serra 2023
Intranasal Fentanyl for Acute Pain Management in Children, Adults and Elderly Patients in the Prehospital Emergency Service and in the…
PMID:37048692
2023this review onlynot statednot extracted yet
Smith 2018
Parenteral opioids for maternal pain management in labour.
PMID:29870574
2018this review onlynot statednot extracted yet
Steinberg 2017
Preemptive analgesia for postoperative hysterectomy pain control: systematic review and clinical practice guidelines.
PMID:28351670
2017this review onlynot statednot extracted yet
Telfer 2024
The acute pain crisis in sickle cell disease: What can be done to improve outcomes?
PMID:38553339
2024this review onlynot statednot extracted yet
Thirunavukarasu 2022
Analgesia for retinopathy of prematurity screening: A systematic review.
PMID:35703418
2022this review onlynot statednot extracted yet
Viscusi 2016
The Efficacy and Safety of the Fentanyl Iontophoretic Transdermal System (IONSYS®) in the Geriatric Population: Results of a Meta-Analysis…
PMID:27785733
2016this review onlynot statednot extracted yet
Viscusi 2024
Present and Future of Pharmacological Management for Acute Moderate-to-Severe Postoperative, Traumatic, or Musculoskeletal Pain in Europe:…
PMID:39305453
2024this review onlynot statednot extracted yet
Walker 2022
Intravenous opioids for chemotherapy-induced severe mucositis pain in children: Systematic review and single-center case series of…
PMID:34731511
2022this review onlynot statednot extracted yet
Xiao 2017
Efficacy and Safety of Tapentadol Immediate Release Assessment in Treatment of Moderate to Severe Pain: A Systematic Review and…
PMID:27516366
2017this review onlynot statednot extracted yet
Zeng 2013
Single-dose intra-articular morphine after arthroscopic knee surgery: a meta-analysis of randomized placebo-controlled studies.
PMID:23768848
2013this review onlynot statednot extracted yet
Zou 2016
Single dose intra-articular morphine for pain control after knee arthroscopy.
PMID:27140500
2016this review onlynot statednot extracted yet

Review question

ElementPlanned (methods)Found (results)
PopulationParticipants of any age with any acute (<3 months) non-malignant painful condition59 reviews (n=59): 24 on acute pain conditions, 29 on post-surgical pain, 6 on acute pain with procedural techniques; 9 reviews in children only; 9 additional trials from citation tracking
InterventionOpioid analgesics (single ingredient or in combination), any dose, formulation, delivery route or regimenOpioid analgesics including morphine, oxycodone, tramadol, codeine, fentanyl, buprenorphine, tapentadol and combinations; daily dose 0.2 to 180 MME/day
ComparisonPlacebo or no active treatmentPlacebo or no active treatment
OutcomesPrimary: pain intensity (continuous). Secondary: other pain outcomes, disability, quality of life, harms (serious adverse events, adverse events, adverse events leading to withdrawal)Pain intensity, categorical pain outcomes, disability, quality of life (no eligible studies), serious adverse events, adverse events, adverse events leading to withdrawal
Study designsSystematic reviews (with or without meta-analysis) of randomized controlled trials published since 2010Systematic reviews of RCTs (n=59 reviews; 11 Cochrane reviews); 86 trials at immediate term, 42 short term, 75 intermediate term, 5 long term
TimingImmediate (<=3 h), short (>3 to <=6 h), intermediate (>6 to <=48 h) and long term (>48 h) after administrationImmediate (n=86 trials; 8407 participants), short (n=42; 4998), intermediate (n=75; 7470), long (n=5; 1002)

AMSTAR 2 items

Two independent extractors rated each item. Their ratings are shown side by side because they have not been reconciled yet. The overall rating follows Shea et al. 2017: one critical flaw gives Low, more than one gives Critically Low.

ItemExtractor AExtractor BAgree
1Research question includes PICO componentsYesYesyes
2Protocol established before the reviewcriticalYesYesyes
3Choice of study designs explainedNoYesno
4Comprehensive literature searchcriticalPartial YesPartial Yesyes
5Study selection in duplicateYesYesyes
6Data extraction in duplicateYesYesyes
7List of excluded studies with reasonscriticalYesYesyes
8Included studies described in detailYesYesyes
9Risk of bias assessed satisfactorilycriticalRCT: Yes · NRSI: N/ANRSI: N/A · RCT: Yesno
10Funding of included studies reportedNoNoyes
11Appropriate meta-analysis methodscriticalRCT: Yes · NRSI: N/ANRSI: N/A · RCT: Yesno
12Impact of risk of bias on the pooled resultsNoNoyes
13Risk of bias accounted for in interpretationcriticalYesYesyes
14Heterogeneity explainedYesYesyes
15Publication bias investigatedcriticalYesYesyes
16Conflicts of interest reportedYesYesyes
OverallModerateModerateyes