What do systematic reviews say?

Augmentation of current antidepressant (SSRI/SNRI) with mirtazapine (30 mg/d) vs augmentation of current antidepressant (various) with placebo

Augmentation of current antidepressant (SSRI/SNRI) with mirtazapine… showed no clear difference in dropouts compared with augmentation of current antidepressant (SSRI/SNRI) therapy with… (high certainty).

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  RR 0.5 [0.15, 1.62]
  1 study · 480 participants
  High

Augmentation of current antidepressant (SSRI/SNRI) with mirtazapine (30 mg/d) vs augmentation of current antidepressant (various) with placebo

Augmentation of current antidepressant (SSRI/SNRI) with mirtazapine… showed no clear difference in response (≥ 50% improvement in BDI‐II score) compared with augmentation of current antidepressant (SSRI/SNRI) therapy with… (high certainty).

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  RR 1.22 [0.97, 1.54]
  1 study · 431 participants
  High

Augmentation of current antidepressant (SSRI/SNRI) with mirtazapine (30 mg/d) vs augmentation of current antidepressant (various) with placebo

Augmentation of current antidepressant (SSRI/SNRI) with mirtazapine… showed no clear difference in remission (BDI‐II total score ≤ 9) compared with augmentation of current antidepressant (SSRI/SNRI) therapy with… (high certainty).

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  RR 1.21 [0.88, 1.65]
  1 study · 431 participants
  High

Augmentation of current antidepressant (SSRI/SNRI) with mirtazapine (30 mg/d) vs augmentation of current antidepressant (various) with placebo

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 447 participants
  High

Augmentation of current antidepressant (SSRI) with busiprone (20 mg/d to 60 mg/d) vs placebo plus antidepressant

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 102 participants
  Low

Augmentation of current antidepressant (SSRI) with busiprone (20 mg/d to 60 mg/d) vs placebo plus antidepressant

Augmentation of current antidepressant (SSRI) with busiprone (20… showed no clear difference in dropouts compared with augmentation of current antidepressant (SSRI) with placebo (low certainty).

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  RR 0.6 [0.23, 1.53]
  1 study · 108 participants
  Low

Augmentation of current antidepressant (SSRI) with busiprone (20 mg/d to 60 mg/d) vs placebo plus antidepressant

The review found no eligible studies for this question.

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Switching to mianserin (60 mg/d) vs continuing on current antidepressant (fluoxetine 20 mg/d)

Switching to mianserin (60 mg/d) showed no clear difference in dropouts compared with continuing on current antidepressant (fluoxetine 20 mg/d) (low certainty).

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  RR 2.08 [0.94, 4.59]
  1 study · 72 participants
  Low

Augmentation of current antidepressant (SSRI) with busiprone (20 mg/d to 60 mg/d) vs placebo plus antidepressant

The review found no eligible studies for this question.

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Augmentation of current antidepressant (various) with cariprazine (1 mg/d to 4.5 mg/d) vs augmentation of current antidepressant (various) with placebo

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 808 participants
  High

Augmentation of current antidepressant (various) with cariprazine (1 mg/d to 4.5 mg/d) vs augmentation of current antidepressant (various) with placebo

Augmentation of current antidepressant (various) with cariprazine (1… probably leads to higher dropouts ‐ any dose compared with augmentation of current antidepressant (various) with placebo (moderate certainty).

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  RR 1.68 [1.16, 2.41]
  1 study · 821 participants
  Moderate

Augmentation of current antidepressant (various) with cariprazine (1 mg/d to 4.5 mg/d) vs augmentation of current antidepressant (various) with placebo

Augmentation of current antidepressant (various) with cariprazine (1… probably leads to higher response (≥ 50% improvement in MADRS score) ‐ any dose compared with augmentation of current antidepressant (various) with placebo (moderate certainty).

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  RR 1.27 [1.07, 1.52]
  1 study · 808 participants
  Moderate

Augmentation of current antidepressant (various) with cariprazine (1 mg/d to 4.5 mg/d) vs augmentation of current antidepressant (various) with placebo

Augmentation of current antidepressant (various) with cariprazine (1… showed no clear difference in remission (MADRS total score ≤ 10) ‐ any dose compared with augmentation of current antidepressant (various) with placebo (moderate certainty).

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  RR 1.07 [0.86, 1.33]
  1 study · 808 participants
  Moderate

Augmentation of current antidepressant (various) with cariprazine (1 mg/d to 4.5 mg/d) vs augmentation of current antidepressant (various) with placebo

The review found no eligible studies for this question.

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Augmentation of current antidepressant (fluoxetine 20 mg/d to 60 mg/d) with olanzapine (5 mg/d to 20 mg/d) vs augmentation of current antidepressant (fluoxetine 20 mg/d to 60 mg/d) with placebo

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 20 participants
  Low
• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 20 participants
  Low

Augmentation of current antidepressant (fluoxetine 20 mg/d to 60 mg/d) with olanzapine (5 mg/d to 20 mg/d) vs augmentation of current antidepressant (fluoxetine 20 mg/d to 60 mg/d) with placebo

Augmentation of current antidepressant (fluoxetine 20 mg/d to 60… showed no clear difference in dropouts compared with augmentation of current antidepressant (fluoxetine 20 mg/d to 60… (low certainty).

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  RR 0.33 [0.04, 2.69]
  1 study · 20 participants
  Low

Augmentation of current antidepressant (fluoxetine 20 mg/d to 60 mg/d) with olanzapine (5 mg/d to 20 mg/d) vs augmentation of current antidepressant (fluoxetine 20 mg/d to 60 mg/d) with placebo

Augmentation of current antidepressant (fluoxetine 20 mg/d to 60… showed no clear difference in response (≥50% reduction in MADRS score) compared with augmentation of current antidepressant (fluoxetine 20 mg/d to 60… (low certainty).

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  RR 6 [0.87, 41.21]
  1 study · 20 participants
  Low

Switching to mianserin (60 mg/d) vs continuing on current antidepressant (fluoxetine 20 mg/d)

Switching to mianserin (60 mg/d) showed no clear difference in response (≥ 50% improvement in HAM‐D score) compared with continuing on current antidepressant (fluoxetine 20 mg/d) (low certainty).

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  RR 1.32 [0.76, 2.27]
  1 study · 71 participants
  Low

Augmentation of current antidepressant (fluoxetine 20 mg/d to 60 mg/d) with olanzapine (5 mg/d to 20 mg/d) vs augmentation of current antidepressant (fluoxetine 20 mg/d to 60 mg/d) with placebo

The review found no eligible studies for this question.

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Augmentation of current antidepressant (fluoxetine 20 mg/d to 60 mg/d) with olanzapine (5 mg/d to 20 mg/d) vs augmentation of current antidepressant (fluoxetine 20 mg/d to 60 mg/d) with placebo

The review found no eligible studies for this question.

• Pharmacological interventions for treatment‐resistant depression in adults 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found