Arabinogalactan
Commonly used for
ImmunityNutrition
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What is it? / Overview
Arabinogalactan is a soluble prebiotic fiber that promotes the growth of beneficial gut bacteria and may enhance certain aspects of immune function. Human evidence suggests modest reductions in upper respiratory tract infections, though data remain limited.
How is it used? / Administration
Form: Larch (Western larch-derived) arabinogalactan
Typical dose studied: 4–8 g/day
Timing: With or without food
Functions primarily as a prebiotic fiber. Start with lower doses to improve GI tolerance.
How well does it work? / Evidence
? Emerging / limited evidence
Who should avoid it?
Interacts with: Separate from oral medications by ~2 hours if GI symptoms occur
Already taking it? Increase dose gradually to reduce bloating -- those with significant intolerance to fermentable fibers may not tolerate this well regardless of dose.
Research & references
Udani JK et al. (2010). Arabinogalactan and pneumococcal vaccine antibody response pilot study. Nutrition Journal. Robinson RR et al. (2001). Dietary arabinogalactan and GI/immune function in healthy adults. Journal of the American College of Nutrition. Kelly GS. (1999). Larch arabinogalactan clinical relevance review. Alternative Medicine Review.
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