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What do systematic reviews say?

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Evidence found and GRADE certainty

1 questions · 1 findings · 1 reviews · Airways

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

Summary of findings table ‐ immunostimulant vs placebo

Side effects or other adverse events · adults with chronic bronchitis or chronic obstructive pulmonary disease

Summary of findings table ‐ immunostimulant showed no clear difference in adverse events/side effects compared with placebo (high certainty).

1 finding from 1 review