Fiber
Arabinogalactan
Also known as: Larch Arabinogalactan, Arabinogalactan (from Larch), AG, LAG
A prebiotic soluble fiber derived from larch tree bark that supports immune function and gut health by promoting beneficial bacteria growth.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every Arabinogalactan product we have scored
| # | Product | Score | Per serving |
|---|---|---|---|
| 1 | Pure Encapsulations Arabinogalactan | 87 A | $0.53 |
| 2 | Pure Encapsulations Epi-Integrity powder | 85 A- | $2.00 |
| 3 | Pure Encapsulations Daily Immune | 83 A- | $1.13 |
| 4 | Vital Nutrients GI Repair Nutrients | 78 B+ | $1.27 |
| 5 | Thorne FiberMend | 77 B+ | $1.50 |
Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.
Common questions
How much Arabinogalactan should I take?
The typical range is 1.5-4.5g per day. Safe for long-term use
When should I take Arabinogalactan?
Can be taken any time. Can be taken with or without food.
Which form of Arabinogalactan is best?
Larch Arabinogalactan Powder — Most common form, easily dissolved in water.
Is Arabinogalactan safe?
Commonly reported: Initial bloating, Gas (temporary). No known concerns
Which Arabinogalactan supplement scores highest?
Pure Encapsulations Arabinogalactan, at 87/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.
Primary uses
- Immune support
- Gut health
- Prebiotic fiber
- Digestive support
How it works
- Fermented by gut bacteria to produce short-chain fatty acids (SCFAs)
- Promotes growth of beneficial Bifidobacteria and Lactobacilli
- May enhance natural killer (NK) cell activity
- Supports gut barrier integrity
Dosage
- Typical range
- 1.5-4.5g per day
- Timing
- Can be taken any time
- With food
- Can be taken with or without food
- Duration
- Safe for long-term use
- Special populations
- Generally safe; start with lower doses if sensitive digestion
Forms
- Larch Arabinogalactan Powder· 80/100
Safety
Common side effects
- Initial bloating
- Gas (temporary)
Products containing Arabinogalactan
Top-scoring supplements in our catalog that list Arabinogalactan on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
Good evidence for prebiotic effects and immune modulation; more research needed for clinical outcomes.
Grade B: Some human trials support key claims; further confirmation needed.
Related in Fiber
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.