Best Lactoferrin for Digestion
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Last reviewed May 2026
Clinical dose: 100–600 mg
Why Lactoferrin for Digestion
Lactoferrin plays a supporting role in digestion. A naturally occurring iron-binding protein found in milk and colostrum. Best studied for improving iron absorption with fewer side effects than traditional iron supplements, and for supporting immune and gut health.
What dose to look for
Clinical studies typically use 100–600 mg of lactoferrin. 100–300 mg/day for general immune/gut support. 250–600 mg/day for iron deficiency support. Enteric-coated or liposomal forms provide ~10× better absorption than standard capsules. Products below this range may not deliver meaningful results.
What form to look for
Avoid lactoferrin powder — no gastric protection — partially degraded by stomach acid. Avoid colostrum — variable lactoferrin content, not standardized. Look for enteric-coated lactoferrin or liposomal lactoferrin for better absorption.
What the research says
Lactoferrin has moderate clinical evidence for digestion benefits. Multiple meta-analyses support iron absorption benefits with fewer side effects than iron supplements Learn more
Clinical research on Lactoferrin
LOW — Antimicrobial properties established in vitro; limited digestive-specific RCTs · 100–300 mg/day (bovine lactoferrin)
- •2009 meta-analysis of 3 RCTs found bovine lactoferrin as adjunct to triple therapy improved H. pylori eradication rates by a small but significant margin. PubMed
- •2019 RCT (60 infants) found bovine lactoferrin significantly reduced incidence and severity of acute gastroenteritis. The pediatric GI evidence is stronger than adult data.
- •Mechanism: sequesters iron from gut pathogens (bacteriostatic), directly disrupts bacterial membranes (bactericidal), and modulates intestinal immune response. It is a natural component of breast milk and mucosal secretions.