What do systematic reviews say?

Agomelatine vs placebo

The review found no eligible studies for this question.

• Melatonin and agomelatine for preventing seasonal affective disorder 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Oral magnesium pidolate vs placebo or no intervention

The review found no eligible studies for this question.

• Magnesium for treating sickle cell disease 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Biotin vs placebo

The review found no eligible studies for this question.

• Interventions for infantile seborrhoeic dermatitis (including cradle cap) 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Proprietary products vs placebo

The review found no eligible studies for this question.

• Interventions for infantile seborrhoeic dermatitis (including cradle cap) 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Antibiotics vs placebo

• Pharmacological interventions for treating chronic prostatitis/chronic pelvic pain syndrome 2019 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 87 participants
  Moderate

Alpha‐blockers vs placebo

• Pharmacological interventions for treating chronic prostatitis/chronic pelvic pain syndrome 2019 · Cochrane Headline outcomes only
  no estimate extracted
  3 studies · 421 participants
  Moderate

Group 2 Pulmonary hypertension due to left‐heart disease ‐ PDE5i vs placebo

• Phosphodiesterase 5 inhibitors for pulmonary hypertension 2019 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 52 participants
  Low

Group 3 Pulmonary hypertension due to lung disease ‐ PDE5i vs placebo

• Phosphodiesterase 5 inhibitors for pulmonary hypertension 2019 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 238 participants
  Moderate

Group 4 Pulmonary hypertension due to CTEPH ‐ PDE5i vs placebo

• Phosphodiesterase 5 inhibitors for pulmonary hypertension 2019 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 34 participants
  Low

Mixed Pulmonary hypertension group 2 ‐ 4 ‐ PDE5i vs placebo

The review found no eligible studies for this question.

• Phosphodiesterase 5 inhibitors for pulmonary hypertension 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Antidepressants vs placebo

• Adjuvant therapy with antidepressants for the management of inflammatory bowel disease 2019 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 70 participants
  Low

Radix Sophorae flavescentis vs placebo or no intervention

The review found no eligible studies for this question.

• Radix Sophorae flavescentis versus no intervention or placebo for chronic hepatitis B 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Prostanoids vs placebo

The review found no eligible studies for this question.

• Prostanoids for critical limb ischaemia 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Probiotics vs placebo

• Probiotics for the prevention or treatment of chemotherapy‐ or radiotherapy‐related diarrhoea in people with cancer 2018 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 72 participants
  Low

Summary of findings: bevacizumab vs placebo

The review found no eligible studies for this question.

• Interventions for the treatment of brain radionecrosis after radiotherapy or radiosurgery 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

B vitamins vs placebo

• Vitamin and mineral supplementation for preventing dementia or delaying cognitive decline in people with mild… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 138 participants
  Moderate

Summary of findings: Trihexyphenidyl vs placebo

The review found no eligible studies for this question.

• Trihexyphenidyl for dystonia in cerebral palsy 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Aspirin vs placebo

The review found no eligible studies for this question.

• Antiplatelet and anticoagulant agents for primary prevention of thrombosis in individuals with antiphospholipid… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

ASA with LMWH vs placebo or IVIG

The review found no eligible studies for this question.

• Antiplatelet and anticoagulant agents for primary prevention of thrombosis in individuals with antiphospholipid… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Olanzapine vs placebo/no treatment

The review found no eligible studies for this question.

• Olanzapine for the prevention and treatment of cancer‐related nausea and vomiting in adults 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found