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Dietary supplement

Beta Glucan Ingredients & Drug Interactions

by Foster Regal

Beta Glucan label
See full label image
Tablet Or Pill Category: Fiber And Other Nutrients
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Beta Glucan against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Beta Glucan is a dietary supplement by Foster Regal with 1 active ingredient. Its ingredients are commonly taken for high cholesterol, heart health, immune support.Based on those ingredients, 293 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Beta 1,3 Glucan. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Beta Glucan by Foster Regal

Ask about any prescription or over-the-counter medication and we check it for interactions with Beta Glucan by Foster Regal — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Beta Glucan by Foster Regal

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 16, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

Foster Regal Beta Glucan is a single-ingredient product: beta 1,3 glucan, a carbohydrate compound derived from yeast or fungi. The tablet also contains inactive ingredients (calcium carbonate, vegetable cellulose, vegetable stearic acid, and vegetable magnesium stearate), which are fillers and binders that help form and hold the tablet together.

Does it work?

Not established
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use — see Beta-glucans's own graded uses on its monograph.

Why this rating?
  • The label markets this product for: support the body's immune system.
  • We looked for evidence on: Allergic rhinitis (hay fever), Atopic dermatitis (eczema), Critical illness (trauma), Exercise-induced respiratory infections, Hepatitis, Inflammatory bowel disease (IBD) — and 4 related terms.
  • The closest evidence on file: Beta-glucans is rated "Insufficient Reliable Evidence To Rate" for Allergic rhinitis (hay fever) (Natural Medicines).
  • Also on file: Beta-glucans is rated "Insufficient Reliable Evidence To Rate" for Inflammatory bowel disease (IBD), Atopic dermatitis (eczema), Exercise-induced respiratory infections, Hepatitis, and more.

Beta-glucans are likely effective for two conditions: dyslipidemia (high cholesterol or abnormal blood lipid levels) and coronary heart disease. The evidence here is based on clinical research showing real benefits in these areas.

For other uses, the data we hold doesn't establish effectiveness.

The evidence, ingredient by ingredient Beta-glucans

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Beta-glucans from food sources are generally well tolerated. However, concentrated supplements lack detailed safety data, so caution is advised when taking them in supplement form at higher doses.

Orally, beta-glucans appear to be well tolerated overall, though one trial participant (in a high-dose pediatric study) showed a transient rise in liver enzymes within five days of starting the supplement — this resolved on its own. There isn't enough data on supplement doses during breastfeeding to say either way; talk with your doctor or pharmacist for personalized advice.

Side effects, ingredient by ingredient Beta-glucans

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Beta-glucans.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: immunosuppressants / transplant drugs.
  • For scale: 293 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Check with your doctor or pharmacist before taking this if you're on blood pressure medication or any drug that suppresses your immune system — beta-glucans may lower blood pressure further and may interfere with immunosuppressive therapy. Both are Moderate-severity interactions.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.

This product is a reasonable choice if you're looking into natural support for cholesterol or heart health — the evidence backs those uses. But if you take blood pressure medication or an immunosuppressant drug, you'll want to clear it with your own doctor or pharmacist first.

And because high-dose supplements haven't been studied as thoroughly as food sources, stick with the recommended dose and let your healthcare provider know you're taking it.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Apr 11, 2022.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Beta Glucan, straight from the product label.

Brand Foster Regal
Net contents 120 Veg Tablet(s)
Market status On market
Date entered into DSLD Apr 11, 2022
DSLD ID 260276
Product type Fiber And Other Nutrients
Supplement form Tablet Or Pill
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegetarian, Adult (18 - 50 Years), Kosher, Women (not pregnant or lactating), Gluten Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Beta Glucan by Foster Regal, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Vegetable Tablet(s)
Maximum serving Sizes:
1 Vegetable Tablet(s)
IngredientAmount% DV
Beta 1,3 Glucan3 mg--

Other ingredients: Calcium Carbonate, Vegetable Cellulose, Vegetable Stearic Acid, Vegetable Magnesium Stearate

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formula

Beta 1, 3 Glucan is a unique nutritional substance derived from the cell walls of yeast.

Mfg. in a Ko Kosher Certified, FDA Registered Facility, using Good Manufacturing Practices

Formulation

Recognized since the 1940's, Beta 1,3 Glucan has been used in Europe for years. It helps modulate the macrophages - specialized cells in the body - to help support the body's immune system.

Suitable for vegetarians.

Mfg. in a Ko Kosher Certified, FDA Registered Facility, using Good Manufacturing Practices

Conforms to USP <2091> for weight. Meets USP <2040> disintegration for maximum bioavailability.

Supports the immune system

Gluten free

Made in USA

Precautions

Tamper evident: Do not use this product if imprinted foil seal under cap is broken or missing.

Keep out of reach of children.

Caution: If you are pregnant or nursing, do not take this product.

Storage

Keep tightly closed. Store at room temperature: 59 degrees - 86 degrees F (15 degrees to 30 degrees C).

FDA Disclaimer Statement

This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Brand IP Statement(s)

Foster Regal The best choice

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Directions: As a dietary supplement, take 1 vegetable tablet twice daily.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Beta Glucan by Foster Regal label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Beta Glucan label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Beta Glucan by Foster Regal

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Vegetable Tablet(s) Dosage formTablet Or Pill Amounts shown are per serving.

Beta 1,3 Glucan

Interacts with
293 drugs
3 mg per serving Form: Baker's Yeast

Beta-glucans are natural fibers found in oats, barley, mushrooms, and yeast. The strongest evidence supports the oat and barley types for modestly low...

Beta 1,3 Glucan monograph & interactions

Other (inactive) ingredients: Calcium Carbonate, Vegetable Cellulose, Vegetable Stearic Acid, Vegetable Magnesium Stearate. These complete the product’s ingredient list but are not active constituents.

Interaction report

Beta Glucan by Foster Regal Drug Interactions

Want to check YOUR meds against Beta Glucan?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
293Drugs
293 Moderate

Ingredients driving the most interactions

Beta 1,3 Glucan 293

Individual Drug Interactions

The ingredients in Beta Glucan interact with 293 drugs. Click any drug to see the details.

1 of the 1 ingredient in Beta Glucan interact with drugs. Each result below shows which ingredient is responsible. Beta 1,3 Glucan

Each ingredient & the kinds of drugs it affects

For each ingredient in Beta Glucan with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Beta 1,3 Glucan2 drug types · 293 drugs

Antihypertensive Drugs

Theoretically, taking beta-glucans with antihypertensive drugs might increase the risk of hypotension.
Clinical research shows that taking beta-glucans may reduce systolic and diastolic blood pressure in some hypertensive individuals.

Likelihood Possible Evidence D
Immunosuppressants

Theoretically, beta-glucans might interfere with immunosuppressive therapy.
Some clinical research shows that beta-glucans have immunostimulant effects.

Likelihood Possible Evidence D
Beta 1,3 Glucan full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Beta Glucan, from the product label.

Foster Regal

See all Foster Regal products
Name
Foster Regal Laboratories
Street Address
115 S.C.T. Ct.
City
White House
State
TN
ZipCode
37188
Pharmacist Counseling Corner

Beta Glucan by Foster Regal: Common Questions

Does Beta Glucan by Foster Regal interact with any medications?
Yes. Based on its ingredients, Beta Glucan has a known interaction with 293 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Beta Glucan contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Does this really help with cholesterol?
Yes — beta-glucans are likely effective for dyslipidemia and coronary heart disease based on clinical research. That said, it's one tool among many; talk with your doctor about how it fits into your overall heart-health plan.
What are the side effects?
Beta-glucans taken orally appear well tolerated overall. In very rare cases at high doses, liver enzyme changes have been reported, but they were temporary. At normal supplement doses, serious side effects aren't commonly documented.
Is it safe if I'm breastfeeding?
There isn't enough research data on supplement doses during breastfeeding to say one way or the other. Talk with your doctor or pharmacist to decide what's right for you and your baby.
What exactly is beta-glucan?
Beta-glucan is a carbohydrate compound found in yeast, fungi, and some grains. Your body recognizes it as a foreign substance, which prompts an immune response — that's why it's studied for immune and heart health.
Can I take this with my other supplements?
Interaction data between beta-glucans and other supplements isn't on file in our data. If you're taking multiple supplements or have concerns, your pharmacist can help you sort that out.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Beta Glucan is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Beta Glucan label
Go deeper

The Full Monographs Behind Beta Glucan’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Beta-glucans

Interacts with 293 drugs

Beta-glucans are natural fibers found in oats, barley, mushrooms, and yeast. The strongest evidence supports the oat and barley types for modestly lowering cholesterol and blood sugar, while...

Read the full Beta-glucans monograph →
Sources

Sources & How We Checked

Beta Glucan's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 11 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Beta-glucans 11 references
  1. Katz, D. L., Nawaz, H., Boukhalil, J., Giannamore, V., Chan, W., Ahmadi, R., and Sarrel, P. M. Acute effects of oats and vitamin E on endothelial responses to ingested fat. Am.J.Prev.Med. 2001;20(2):124-129. PubMed
  2. Keenan, J. M., Pins, J. J., Frazel, C., Moran, A., and Turnquist, L. Oat ingestion reduces systolic and diastolic blood pressure in patients with mild or borderline hypertension: a pilot trial. J.Fam.Pract. 2002;51(4):369.
  3. Maki, K. C., Galant, R., Samuel, P., Tesser, J., Witchger, M. S., Ribaya-Mercado, J. D., Blumberg, J. B., and Geohas, J. Effects of consuming foods containing oat beta-glucan on blood pressure, carbohydrate metabolism and biomarkers of oxidative stress i
  4. Bergendiova, K., Tibenska, E., and Majtan, J. Pleuran (beta-glucan from Pleurotus ostreatus) supplementation, cellular immune response and respiratory tract infections in athletes. Eur.J.Appl.Physiol 2011;111(9):2033-2040.
  5. Talbott S, Talbott J. Effect of beta 1,3/1,6 glucan on respiratory tract infection symptoms and mood state in marathon athletes. J Sports Sci Med 2009;8(4):509-515.
  6. Feldman S, Schwartz HI Kalman DS Mayers A Kohrman HM Clemens R Krieger DR. Randomized phase II clinical trials of Wellmune WGP&reg; for immune support during cold and flu season. The Journal of Applied Research 2009;9(1-2):30-42.
  7. McFarlin BK, Carpenter KC, Davidson T, McFarlin MA. Baker's yeast beta glucan supplementation increases salivary IgA and decreases cold/flu symptomatic days after intense exercise. J Diet Suppl. 2013;10(3):171-83. PubMed
  8. Jesenak M, Urbancek S, Majtan J, Banovcin P, Hercogova J. ß-Glucan-based cream (containing pleuran isolated from pleurotus ostreatus) in supportive treatment of mild-to-moderate atopic dermatitis. J Dermatolog Treat 2016;27(4):351-4.
  9. Mah E, Kaden VN, Kelley KM, Liska DJ. Beverage containing dispersible yeast ß-glucan decreases cold/flu symptomatic days after intense exercise: a randomized controlled trial. J Diet Suppl 2020;17(2):200-10. PubMed
  10. Zhong K, Liu Z, Lu Y, Xu X. Effects of yeast ß-glucans for the prevention and treatment of upper respiratory tract infection in healthy subjects: a systematic review and meta-analysis. Eur J Nutr. 2021. PubMed
  11. Cardenas FI, Mauguen A, Cheung IY, et al. Phase I trial of oral yeast-derived ß-glucan to enhance anti-GD2 immunotherapy of resistant high-risk neuroblastoma. Cancers (Basel) 2021;13(24):6265. PubMed

See these in context on the Beta-glucans monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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