Iron vs Ginkgo

for cognition

Stronger evidence: tie

Stronger effect: tie

Safety: Ginkgo carries a serious interaction; Iron has none recorded.

For cognition, the two are evidence-matched; the difference is in effect and safety.

grade C low certainty

improves attention/cognition when iron deficiency is present; no benefit if replete

18–65 mg/day, iron-deficient adults

grade C low certainty

no reliable benefit for preventing cognitive decline in large trials

sources: PMID:20000115 · PMID:00000034