Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

256 questions · 278 findings · 34 reviews · ENT

No studies found 86 · 30.9%GRADE not reported 1 · 0.4%Very low 88 · 31.7%Low 66 · 23.7%Moderate 35 · 12.6%High 2 · 0.7%

Betahistine vs placebo

Tinnitus loudness · patients with subjective idiopathic tinnitus
2 findings from 1 review
  • Betahistine for tinnitus 2018 · Cochrane Headline outcomes only
    no estimate extracted
    2 studies · 81 participants
    Very low
  • Betahistine for tinnitus 2018 · Cochrane Headline outcomes only
    no estimate extracted
    1 study · 70 participants
    Very low

Betahistine vs placebo

Other adverse effects (yes or no) · patients with subjective idiopathic tinnitus
2 findings from 1 review