Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,949 questions · 1,994 findings · 636 reviews

No studies found 504 · 25.3%GRADE not reported 340 · 17.1%Very low 477 · 23.9%Low 390 · 19.6%Moderate 241 · 12.1%High 42 · 2.1%

Intervention not reported

Unforeseen adverse effects · General public or any of its constituent groups (excluding groups comprising solely of people with mental ill health)
1 finding from 1 review

Summary of findings table ‐ immunostimulant vs placebo

Side effects or other adverse events · adults with chronic bronchitis or chronic obstructive pulmonary disease

Summary of findings table ‐ immunostimulant showed no clear difference in adverse events/side effects compared with placebo (high certainty).

1 finding from 1 review

Sulthiame vs levetiracetam

Adverse effects (behaviour) · participants with epilepsy (BECTS)

Sulthiame showed no clear difference in adverse effects (behaviour) compared with levetiracetam (low certainty).

1 finding from 1 review

Sulthiame add‐on vs placebo

Somnolence · patients between 3 to 15 months of age with West syndrome

It is very uncertain whether sulthiame add‐on changes adverse effects: somnolence compared with placebo (very low certainty).

1 finding from 1 review

Dietary supplements (Catuama herbal compound) vs placebo

Somnolence · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms

It is very uncertain whether dietary supplements (Catuama herbal compound) changes adverse effects: drowsiness compared with placebo (very low certainty).

1 finding from 1 review

Benzodiazepines (topical clonazepam) vs placebo

Somnolence · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms

It is very uncertain whether benzodiazepines (topical clonazepam) changes adverse effects: drowsiness compared with placebo (very low certainty).

1 finding from 1 review