Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

9 questions · 9 findings · 6 reviews · Developmental, Psychosocial and Learning Problems

No studies found 3 · 33.3%GRADE not reported 1 · 11.1%Very low 0 · 0%Low 3 · 33.3%Moderate 2 · 22.2%High 0 · 0%

Home (point‐of‐use) fortification of foods with multiple micronutrient powders vs placebo or no intervention

Any adverse effects (e.g. hypervitaminosis A, as defined by the trialists) · preschool and school‐age children

Point‐of‐use fortification of foods with micronutrients powders (MNP) showed no clear difference in adverse effects (any, as defined by trialists) compared with no intervention or placebo (moderate certainty).

1 finding from 1 review

Intervention not reported

Any adverse side effects (total), as defined and reported by trial authors · menstruating women (non‐pregnant women of reproductive age)

The intervention showed no clear difference in any adverse side effects (total), as defined and reported by trial… (low certainty).

1 finding from 1 review

Prophylactic probiotics vs placebo

Adverse effects Measured by: reporting · infants without colic

Prophylactic probiotics showed no clear difference in adverse effects Measured by: reporting compared with placebo (low certainty).

1 finding from 1 review

Intervention not reported

Adverse effects Defined as deaths, hospitalisations, congenital abnormalities and life‐threatening conditions requiring an immediate hospital visit Assessed at 12 and 18 months of age · children aged 6 to 23 months

The intervention showed no clear difference in adverse effects Defined as deaths, hospitalisations, congenital… (moderate certainty).

1 finding from 1 review