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Iron Fumarate (Ferrous Fumarate)

Also known as: ferrous fumarate

Low concern

Ferrous fumarate is an approved iron fortificant with good bioavailability. At supplemental doses it commonly causes GI side effects (constipation, nausea).

What it is

An iron(II) salt of fumaric acid used as a source of dietary iron in fortified foods and supplements.

Provides bioavailable iron for food fortification and iron-deficiency supplementation.

Why it's flagged

GI side effects at supplemental doses
Acute iron poisoning risk if children ingest supplements

Regulatory status

United States — FDA

GRAS / permitted nutrient source (21 CFR 184)

European Union — EFSA

Authorised source of iron for food fortification and supplements

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