Ferrous fumarate provides a high amount of elemental iron per dose (about 33%), making it highly effective for treating iron deficiency rapidly. However, its high concentration may cause gastrointestinal side effects similar to ferrous sulfate.
Verdict
Essential for correcting deficiency; harmful if taken without medical need.
HEALTHSPAN IMPACT
Moderate
RISK LEVEL
Low
EVIDENCE GRADE
A
MONTHLY COST
$5 - $12
Protocol
- Take 65-106 mg of elemental iron daily or every other day to correct diagnosed iron deficiency.
- Dosage should be guided by regular ferritin, transferrin saturation, and CBC blood tests.
Flags
- Only use if diagnosed with iron deficiency or insufficiency via blood tests.
- Excess iron is a pro-oxidant and can accelerate aging and organ damage.
- May interfere with absorption of zinc, manganese, and certain medications like levothyroxine.
- High elemental iron content may lead to similar GI side effects as sulfate.