Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,655 questions · 1,751 findings · 147 reviews · Pain, Palliative and Supportive Care

No studies found 361 · 20.6%GRADE not reported 87 · 5%Very low 625 · 35.7%Low 367 · 21%Moderate 232 · 13.2%High 79 · 4.5%

Herbal treatment vs placebo

Participant‐reported pain relief of 30% or greater · adults with neuropathic pain

It is very uncertain whether herbal treatment changes participant‐reported pain relief of 30% or greater Immediately… compared with placebo (very low certainty).

1 finding from 1 review

Intervention not reported

Achievement of at least 50% reduction in headache severity Post‐treatment Higher scores indicate more children with reduced headache · children or adolescents with headaches

It is very uncertain whether the intervention changes achievement of at least 50% reduction in headache severity… (very low certainty).

1 finding from 1 review