Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

780 questions · 834 findings · 76 reviews

No studies found 187 · 22.4%GRADE not reported 164 · 19.7%Very low 144 · 17.3%Low 172 · 20.6%Moderate 105 · 12.6%High 62 · 7.4%

Vitamin E + vitamin C vs placebo

Any adverse effects of vitamin supplementation sufficient to stop supplementation · pregnant women

Vitamin C and vitamin E showed no clear difference in any adverse effects of vitamin supplementation sufficient to stop… compared with placebo (moderate certainty).

1 finding from 1 review

Antioxidant multivitamin and mineral supplement vs placebo or no treatment

Progression to late AMD (neovascular AMD, geographic atrophy or both) · people with AMD

Antioxidant multivitamin and mineral supplement probably leads to lower progression to late AMD (neovascular AMD, geographic atrophy, or both) compared with placebo or no treatment (moderate certainty).

1 finding from 1 review

Antioxidant multivitamin and mineral supplement vs placebo or no treatment

Progression to neovascular AMD · people with AMD

Antioxidant multivitamin and mineral supplement probably leads to lower progression to neovascular AMD compared with placebo or no treatment (moderate certainty).

1 finding from 1 review

Antioxidant multivitamin and mineral supplement vs placebo or no treatment

Progression to geographic atrophy · people with AMD

Antioxidant multivitamin and mineral supplement showed no clear difference in progression to geographic atrophy compared with placebo or no treatment (moderate certainty).

1 finding from 1 review

Antioxidant multivitamin and mineral supplement vs placebo or no treatment

Progression to visual loss (loss of 3 or more lines on logMAR chart) · people with AMD

Antioxidant multivitamin and mineral supplement probably leads to lower progression to visual loss (loss of 3 or more lines on logMAR chart) compared with placebo or no treatment (moderate certainty).

1 finding from 1 review

Vitamin A vs placebo

Incidence of acute URTIs during the study period (the number of acute URTIs over a period of time) · children up to the age of 7 at risk of upper respiratory tract infection

Summary of findings table ‐ Vitamin A supplements showed no clear difference in incidence of acute URTIs during the study period (the number of… compared with placebo (low certainty).

1 finding from 1 review