← The shop
Nutrition & food
NOW Prebiotic fiber
Clinical ~$11
NOW Organic Acacia Fiber, a simple single-ingredient prebiotic fiber from a brand with brand-level testing (not per-lot certified).
Some links earn us a commission. It never affects our picks or grades. See our affiliate disclosure.
Educational only, not medical advice. Talk to a doctor about your individual circumstances before acting on this.
Called for in
- Wahls Paleo: Levels 2-3 · Terry Wahls
- Functional Gut Reset · Mark Hyman
- The 5 Supplements That Made My List · Simon Hill
Experts who call for it
Choose your tier
Tiered options are coming soon. Today, every pick above is our single vetted recommendation.