Findings

What do systematic reviews say?

1 questions · 1 findings · 1 reviews

No studies found 0 · 0%GRADE not reported 0 · 0%Very low 0 · 0%Low 1 · 100%Moderate 0 · 0%High 0 · 0%

Total adverse events · glabellar lines

Summary of Findings Table ‐ OnabotulinumtoxinA 20U showed no clear difference in total adverse events compared with placebo (low certainty).

1 finding from 1 review

Botulinum toxin type A for facial wrinkles 2021 · Cochrane Headline outcomes only
RR 1.14 [0.89, 1.45]
8 studies · 1388 participants
Low