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What do systematic reviews say?

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Evidence found and GRADE certainty

4 questions · 4 findings · 3 reviews

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No studies found 1 · 25%GRADE not reported 0 · 0%Very low 1 · 25%Low 2 · 50%Moderate 0 · 0%High 0 · 0%

Antioxidants vs placebo or no treatment

Gastrointestinal adverse events · patients with male subfertility

Antioxidants may leads to higher adverse events ‐ Gastrointestinal compared with placebo or no treatment (low certainty).

1 finding from 1 review

Omega‐3 fatty acids and antioxidants vs standard diet or placebo

Gastrointestinal adverse events · adults (aged 18 years or older), mechanically ventilated participants with ARDS as defined by the Berlin definition of ARDS or, for older…

It is very uncertain whether omega‐3 fatty acids and antioxidants changes gastrointestinal adverse events (study author reported anytime… compared with placebo or standard nutrition (very low certainty).

1 finding from 1 review

Intervention not reported

Adverse events ‐ Gastrointestinal disturbances · women with subfertility

The review found no eligible studies for this question.

1 finding from 1 review