Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1 questions · 3 findings · 1 reviews

No studies found 0 · 0%GRADE not reported 2 · 66.7%Very low 0 · 0%Low 1 · 33.3%Moderate 0 · 0%High 0 · 0%

Intraglandular botulinum neurotoxin (BoNT) injection vs placebo injection

Adverse events (participants with >=1 adverse event) · Adults with Parkinson's disease and sialorrhea (drooling)

Type A botulinum toxin showed a borderline, non-significant increase in adverse events versus placebo (RD 0.10, 95% CI 0.00 to 0.21; ungraded subgroup).

3 findings from 1 review