Immune
Beta Glucan
Also known as: β-glucan, beta-1,3/1,6-glucan, 1,3/1,6 beta glucan, yeast beta glucan
Beta glucan is a soluble polysaccharide found in yeast, mushrooms, and grains that supports immune function by activating immune cells. Multiple clinical studies demonstrate modest benefits for immune response and upper respiratory health.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every Beta Glucan product we have scored
| # | Product | Score | Per serving |
|---|---|---|---|
| 1 | SmartyPants Kids Probiotic & Prebiotic - Grape | 78 B+ | $0.87 |
| 2 | SmartyPants Kids Probiotic & Prebiotic - Strawberry | 78 B+ | $0.87 |
| 3 | Pure Encapsulations PureDefense Collagen w/ Bone Broth powder | 69 B | $2.90 |
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 Beta Glucan should I take?
The typical range is 250-500 mg daily. benefits typically appear after 4-8 weeks of consistent use
When should I take Beta Glucan?
any time of day. can be taken with or without food.
Which form of Beta Glucan is best?
Yeast-derived (1,3/1,6) — Best studied for immunity. Other forms in the catalog: Mushroom-derived, Oat beta-glucan (1,3/1,4), powder, capsules, tablet.
Is Beta Glucan safe?
Commonly reported: rare: mild gastrointestinal upset, rare: allergic reactions in yeast-sensitive individuals.
Which Beta Glucan supplement scores highest?
SmartyPants Kids Probiotic & Prebiotic - Grape, at 78/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.
Primary uses
- Immune priming
- Cold/flu prevention
- Innate immunity
- Pathogen defense
- immune support
- upper respiratory health
- immune cell activation
How it works
- binds to pattern recognition receptors on immune cells
- activates macrophages and neutrophils
- enhances natural killer cell activity
Dosage
- Typical range
- 250-500 mg daily
- Timing
- any time of day
- With food
- can be taken with or without food
- Duration
- benefits typically appear after 4-8 weeks of consistent use
- Special populations
- Generally well-tolerated across age groups; immunocompromised individuals should consult healthcare provider
Forms
- Yeast-derived (1,3/1,6)
- Mushroom-derived
- Oat beta-glucan (1,3/1,4)
- powder· 70/100
- capsules· 70/100
- tablet· 70/100
Safety
Common side effects
- rare: mild gastrointestinal upset
- rare: allergic reactions in yeast-sensitive individuals
Contraindications
- yeast allergy
- severe immunosuppression (consult provider)
Products containing Beta Glucan
Top-scoring supplements in our catalog that list Beta Glucan on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
Strong evidence for immune modulation
Grade A: Multiple well-designed human trials support the main claims.
Related in Immune
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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.