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What do systematic reviews say?

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Evidence found and GRADE certainty

305 questions · 307 findings · 147 reviews

No studies found 307 · 100%GRADE not reported 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Intervention not reported

Serious adverse events

The review found no eligible studies for this question.

1 finding from 1 review

Intervention not reported

Serious adverse events · adults with fibromyalgia

The review found no eligible studies for this question.

1 finding from 1 review

Intervention not reported

Non‐serious adverse events · participants with β‐thalassaemia

The review found no eligible studies for this question.

1 finding from 1 review