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SPECIALTY

Lactoferrin

Immune · iron absorption · gut bacteria balance

STRONG EVIDENCEREAD THE RESEARCH
Written to our editorial standards · reviewed against published research· Updated 2 Jun 2026
Last reviewed: May 30, 2026
QUICK ANSWER

Lactoferrin: Immune · iron absorption · gut bacteria balance. A milk protein with broad-spectrum antimicrobial action and a powerful immune modulator. Also boosts iron absorption. Standard dose 250 mg, taken in the morning, about $32/month. Evidence rating: strong evidence.

What is Lactoferrin?

Lactoferrin is an iron-binding glycoprotein found in milk (especially colostrum), tears, and other body secretions. It is a key part of the innate immune system, with documented antibacterial, antiviral, antifungal, and immunomodulatory activity. Clinical trials show benefits for recurrent respiratory infections, iron-deficiency anemia (lactoferrin improves iron absorption while reducing GI side effects), and gut microbiome balance. The recombinant and bovine-sourced forms are both effective. Standard dose is 100-400 mg per day, on an empty stomach for immune use or with iron-rich meals for absorption support.

WHY IT MATTERS

A milk protein with broad-spectrum antimicrobial action and a powerful immune modulator. Also boosts iron absorption.

Natural food sources

Where possible, get Lactoferrin from whole foods first. Common dietary sources include:

ColostrumRaw & whole milkCheeseWhey

Where to buy

Jarrow Formulas Lactoferrin 250mg
RECOMMENDED
Jarrow Formulas, Lactoferrin
250 mg · Morning · ~$32/month

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Common questions

What is Lactoferrin?
Lactoferrin is an iron-binding glycoprotein found in milk (especially colostrum), tears, and other body secretions. It is a key part of the innate immune system, with documented antibacterial, antiviral, antifungal, and immunomodulatory activity. Clinical trials show benefits for recurrent respiratory infections, iron-deficiency anemia (lactoferrin improves iron absorption while reducing GI side effects), and gut microbiome balance. The recombinant and bovine-sourced forms are both effective. Standard dose is 100-400 mg per day, on an empty stomach for immune use or with iron-rich meals for absorption support.
What is Lactoferrin used for?
Immune · iron absorption · gut bacteria balance. A milk protein with broad-spectrum antimicrobial action and a powerful immune modulator. Also boosts iron absorption.
What is the standard dose of Lactoferrin?
250 mg, typically taken in the morning. Approximate cost is $32 per month.
Who should avoid Lactoferrin?
Use extra caution, and speak to a clinician first, if you are dairy-allergy.
How strong is the evidence for Lactoferrin?
Strong evidence for its primary uses. See the full study list on the research page.

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