Interactions on record — worth a quick check against your medications. Based on 2 of 4 ingredients. Check your meds →
Dietary supplement

Immune Defense Ingredients & Drug Interactions

by Vibrant Health

Capsule Category: Other Combinations
Most serious interaction: Moderate
The interaction bottom line Most serious interaction: Moderate

Immune Defense is a dietary supplement by Vibrant Health with 4 active ingredients. Its ingredients are commonly taken for immune support, cold and flu prevention, digestive and gut health.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 1,3-1,6 Glucans 70% standardized extract, Larch Arabinogalactans extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

HelloPharmacist Scorecard of Immune Defense by Vibrant Health

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

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 4 of its 4 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

Immune Defense contains four active ingredients. Larch arabinogalactan and beta-1,3-1,6 glucans (standardized to 70%) are fiber-derived compounds traditionally used to support immune function.

IgY Max and Gigartina whole plant red marine extract round out the formula. The product also contains inactive ingredients—vegetable capsule, microcrystalline cellulose, magnesium stearate, and silicon dioxide—which serve as the capsule shell and binding agents.

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.

Why this rating?
  • The label markets this product for: Immune support.
  • We looked for evidence on: Common cold, Exercise-induced respiratory infections, Lower respiratory tract infections, Otitis media, Allergic rhinitis (hay fever), Wound healing — and 4 related terms.
  • The closest evidence on file: Larch Arabinogalactan is rated "Insufficient Reliable Evidence To Rate" for Common cold (Natural Medicines).
  • Also on file: Beta-glucans is rated "Insufficient Reliable Evidence To Rate" for Allergic rhinitis (hay fever), Lower respiratory tract infections, Exercise-induced respiratory infections, Otitis media, and more.

The evidence for these ingredients is mixed. Beta-glucans show likely effectiveness for cholesterol management and heart disease support.

Larch arabinogalactan, on the other hand, has insufficient reliable evidence for common cold or cholesterol support—meaning we don't have enough good research to know if it works for those purposes. IgY Max and Gigartina lack established effectiveness ratings in our data.

The evidence, ingredient by ingredient Larch Arabinogalactan 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 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Larch arabinogalactan is generally well tolerated as a fiber, though some people report bloating and flatulence. Long-term safety data are limited, so caution is advised.

Beta-glucans from food sources are well tolerated by most people, but concentrated supplement doses lack robust safety data—use caution and discuss with your doctor or pharmacist first. For pregnancy and lactation, there isn't enough safety data on file for either ingredient to know whether it's safe; talk with your doctor or pharmacist for personalized guidance before taking this product if you're pregnant or breastfeeding.

Side effects, ingredient by ingredient Larch Arabinogalactan 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?
  • 2 of the 2 matched ingredients can interact with medications — Larch Arabinogalactan, 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 your medications against this product if you take immunosuppressants such as azathioprine, cyclosporine, tacrolimus, or daclizumab—the larch arabinogalactan and beta-glucans here could interfere with how they work. Also double-check if you're on blood pressure medications; beta-glucans may lower blood pressure further.

Bring your medication list to your pharmacist or doctor before you start.

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 formula may appeal to people interested in immune or cardiovascular support, but it's not right for everyone. If you take immunosuppressants (after transplant, for autoimmune disease, or for certain inflammatory conditions) or blood pressure medication, you need to check with your doctor or pharmacist before adding this product.

The same goes if you're pregnant, breastfeeding, or have questions about whether it fits your health situation.

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

Assessment coverage: 2 of 4 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jan 7, 2019.

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 Immune Defense, straight from the product label.

Brand Vibrant Health
Barcode (UPC) 074306800350
Net contents 120 Vegetable Capsule(s)
Market status On market
Date entered into DSLD Jan 7, 2019
DSLD ID 183055
Product type Other Combinations
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), 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 Immune Defense by Vibrant Health, 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:
2 Vegetable Capsule(s)
Maximum serving Sizes:
8 Vegetable Capsule(s)
Servings per container
60
UPC/BARCODE
074306800350
IngredientAmount% DV
Larch Arabinogalactans extract250 mg--
Beta 1,3-1,6 Glucans 70% standardized extract10 mg--
IgY Max500 mg--
Gigartina whole plant Red Marine extract5 mg--

Other ingredients: Vegetable Capsule, Microcrystalline Cellulose, Magnesium Stearate, Silicon Dioxide

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.
FDA Disclaimer Statement

These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.

Formula

Contains: egg

Immune Defense provides arabinogalactans, anti-viral sulfated polysaccharides, beta glucans and HyperImmune egg, a unique new ingredient that delivers 26 human-specific antibodies, inhibits microbial adhesion, fosters growth of healthy bacteria, and reduces inflammatory cytokines.

HyperImmune Egg, Beta Glucans Larch Arabinogalactans & Red Marine Algae

Precautions

Contains: egg

If you are pregnant, planning to become pregnant, breast feeding, taking any prescription medication, or have a medical condition, consult your physician or healthcare professional before taking this product.

Do not exceed recommended dosage.

Keep out of reach of children.

Brand IP Statement(s)

IgY Max is a trademark of IgY Nutrition, LLC and is used under license.

ResistAid is a trademark of Lonza Group Ltd., Basel, Switzerland

Suggested/Recommended/Usage/Directions

Directions As a dietary supplement, take from two (2) to eight (8) vegetable capsules in divided dosages each day, or as directed by a health professional.

Storage

Store in a cool dry place.

General Statements

A Comprehensive Immune Support Formula Clinically Formulated

Four Powerful Immune Boosters

Look What's Inside Full Disclosure Labeling

Made in the USA since 1992 with worldwide ingredients 2 HDPE

General

Version 2.0 ID18_17414

Formulation

Gluten free Non-GMO Soy free

FDA Statement of Identity

Dietary Supplement

See for yourself

Immune Defense by Vibrant Health label

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

What’s inside

The Ingredients in Immune Defense by Vibrant Health

These are the 4 active ingredients this product is made of. Select any to open its full monograph.

Serving size2 Vegetable Capsule(s) Dosage formCapsule Servings per container60 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Larch Arabinogalactans extract

Interacts with
121 drugs
250 mg per serving

Larch arabinogalactan is a soluble fiber from larch trees that is mainly used as a prebiotic and for immune support. Early research is interesting but...

Larch Arabinogalactans extract monograph & interactions
10 mg per serving Form: Saccharomyces cerevisiae 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 1,3-1,6 Glucans 70% standardized extract monograph & interactions

IgY Max

500 mg per serving Form: Hyperimmune Egg powder

Gigartina whole plant Red Marine extract

5 mg per serving

Other (inactive) ingredients: Vegetable Capsule, Microcrystalline Cellulose, Magnesium Stearate, Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.

Interaction report

Immune Defense by Vibrant Health Drug Interactions

Want to check YOUR meds against Immune Defense?

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

Each ingredient & the kinds of drugs it affects

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

Beta 1,3-1,6 Glucans 70% standardized extract2 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

Larch Arabinogalactans extract1 drug type · 121 drugs

Immunosuppressants

Theoretically, larch arabinogalactan might interfere with immunosuppression therapy due to immunostimulant effects. Immunosuppressant drugs include azathioprine (Imuran), basiliximab (Simulect), cyclosporine (Neoral, Sandimmune), daclizumab (Zenapax), muromonab-CD3 (OKT3, Orthoclone OKT3), mycophenolate (CellCept), tacrolimus (FK506, Prograf), sirolimus (Rapamune), prednisone (Deltasone, Orasone), corticosteroids (glucocorticoids), and other drugs.

Likelihood Possible Evidence D
The maker

Brand information

Manufacturer and brand details for Immune Defense, from the product label.

Vibrant Health

See all Vibrant Health products
Name
Vibrant Health
City
Shelton
State
CT
ZipCode
06484
Phone Number
1-800-242-1835
Web Address
vibranthealth.com
Pharmacist Counseling Corner

Immune Defense by Vibrant Health: Common Questions

Does Immune Defense by Vibrant Health interact with any medications?
Yes. Based on its ingredients, Immune Defense 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?
Immune Defense contains 4 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is 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 product actually help prevent colds?
Larch arabinogalactan, one of the main ingredients, doesn't have enough reliable research behind it to say one way or another. The evidence for that claim is insufficient right now.
Will this upset my stomach?
Some people experience bloating and flatulence from larch arabinogalactan because it's fiber-based. If your stomach is sensitive, start slowly and see how you feel. If side effects don't settle, stop and talk to your pharmacist.
Is it safe to take while I'm breastfeeding?
There isn't enough safety data on file for larch arabinogalactan or beta-glucans during breastfeeding. Talk with your doctor or pharmacist before taking this product—they can help you decide what's right for you and your baby.
What does beta-glucan actually do?
Beta-glucan has likely effectiveness for lowering cholesterol and supporting heart health. It may also lower blood pressure in some people, so that's important to know if you're already on blood pressure medication.
Can I take this if I had an organ transplant?
No—talk to your transplant doctor first. These ingredients stimulate the immune system, which could interfere with the immunosuppressant drugs you need to prevent rejection.

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

Not sure if Immune Defense is safe with your meds?

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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.

Immune Defense label
Sources

Sources & How We Checked

Immune Defense'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 19 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.

Larch Arabinogalactan 8 references
  1. D'Adamo P. Larch arabinogalactan. J Naturopath Med 1996;6:33-7.
  2. Kelly GS. Larch arabinogalactan: Clinical relevance of a novel immune-enhancing polysaccharide. Alt Med Rev 1999;4:96-103.
  3. Marett R, Slavin JL. No long-term benefits of supplementation with arabinogalactan on serum lipids and glucose. J Am Diet Assoc 2004;104:636-9.
  4. Robinson RR, Feirtag J, Slavin JL. Effects of dietary arabinogalactan on gastrointestinal and blood parameters in healthy human subjects. J Am Coll Nutr 2001;20:279-85. PubMed
  5. Udani JK, Singh BB, Barrett ML, Singh VJ. Proprietary arabinogalactan extract increases antibody response to the pneumonia vaccine: a randomized, double-blind, placebo-controlled, pilot study in healthy volunteers. Nutr J 2010;9:32. PubMed
  6. Grube B, Stier H, Riede L, Gruenwald J. Tolerability of a proprietary larch arabinogalactan extract: a randomized, double-blind, placebo-controlled clinical trial in healthy subjects. Food Nutr Sci 2012;3:1533-8. DOI
  7. Dion C, Chappuis E, Ripoll C. Does larch arabinogalactan enhance immune function? A review of mechanistic and clinical trials. Nutr Metab (Lond) 2016;13:28. PubMed
  8. Riede L, Grube B, Gruenwald J. Larch arabinogalactan effects on reducing incidence of upper respiratory tract infections. Curr Med Res Opin 2013;29(3):251-8.

See these in context on the Larch Arabinogalactan monograph →

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® 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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