Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

7 questions · 7 findings · 3 reviews · Musculoskeletal

No studies found 2 · 28.6%GRADE not reported 0 · 0%Very low 0 · 0%Low 1 · 14.3%Moderate 3 · 42.9%High 1 · 14.3%

Folic or folinic acid (any) vs placebo

Gastrointestinal adverse events · Patients receiving methotrexate for rheumatoid arthritis

Folic or folinic acid (any) probably leads to lower GI side effects (nausea, vomiting, abdominal pain) compared with placebo (moderate certainty).

1 finding from 1 review

Summary of findings: Folic acid vs placebo

GI side effects (ie, incidence of nausea, vomiting, abdominal pain) · Patients receiving methotrexate for rheumatoid arthritis

Folic acid showed no clear difference in GI side effects (ie, incidence of nausea, vomiting, abdominal pain) compared with placebo (moderate certainty).

1 finding from 1 review