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Dietary supplement

Dr. Cutler's EpiCor Immune Support Ingredients & Drug Interactions

by True Health

Dr. Cutler's EpiCor Immune Support label
See full label image
Capsule Category: Non-nutrient/non-botanical
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Dr. Cutler's EpiCor Immune Support 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: Major

Dr. Cutler's EpiCor Immune Support is a dietary supplement by True Health with 1 active ingredient. Its ingredients are commonly taken for source of b vitamins, diarrhea (certain types), cold and flu support.Based on those ingredients, 136 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Dried Yeast Fermentate. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Dr. Cutler's EpiCor Immune Support by True Health

Ask about any prescription or over-the-counter medication and we check it for interactions with Dr. Cutler's EpiCor Immune Support by True Health — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Dr. Cutler's EpiCor Immune Support by True 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

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 11, 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.

This product contains one active ingredient: dried yeast fermentate, also called brewer's yeast. It's the non-living remains of yeast cells left over from beer brewing, and it supplies B vitamins, minerals, and compounds that may support immune function and digestive health.

The capsule itself is made from gelatin, an inactive ingredient.

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 Brewer's Yeast's own graded uses on its monograph.

Why this rating?
  • The label markets this product for: Immune system support.
  • We looked for evidence on: Allergic rhinitis (hay fever), Clostridioides difficile infection, Diarrhea, Influenza, Upper respiratory infections, Common cold — and 2 related terms.
  • The closest evidence on file: Brewer's Yeast is rated "Insufficient Reliable Evidence To Rate" for Allergic rhinitis (hay fever) (Natural Medicines).
  • Also on file: Brewer's Yeast is rated "Insufficient Reliable Evidence To Rate" for Diarrhea, Influenza, Clostridioides difficile infection.

The evidence is mixed. Brewer's yeast is possibly effective for irritable bowel syndrome (IBS) based on clinical data we have.

For other uses listed — Clostridioides difficile infection, influenza, high cholesterol, and hay fever — the evidence we hold is insufficient to rate whether it works. Talk with your pharmacist or doctor about whether this matches what you're hoping to treat.

The evidence, ingredient by ingredient Brewer's Yeast

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.

Brewer's yeast is generally well tolerated when used short-term in most people. The most common side effects are gas and flatulence; some people report migraine-like headaches.

Serious side effects are rare but can include anaphylaxis in sensitive individuals and, theoretically, a fungal infection (fungemia) in people with weakened immune systems. It's not recommended for people with certain immune conditions — check with your provider if that's you.

For pregnancy and breastfeeding, food amounts of brewer's yeast are likely fine, but safety data on concentrated supplements at higher doses isn't well studied. Talk with your doctor or pharmacist before using this product if you're pregnant or nursing.

Side effects, ingredient by ingredient Brewer's Yeast

Meds to double-check

Major interaction found
Known Interaction Concern · database check
Major identified

At least one ingredient has a documented Major-severity interaction. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Brewer's Yeast.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: diabetes medications; lithium.
  • For scale: 136 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.

Before starting this product, double-check if you take an MAOI antidepressant or blood pressure medication — brewer's yeast can trigger a dangerous blood pressure spike. Also verify any antidiabetes drugs (risk of low blood sugar), lithium supplements, or antifungal medications.

If you're not sure, use the medication checker below.

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. Major medication interactions have been identified, and safety information is well characterized.

Brewer's yeast supplements may help with irritable bowel syndrome, but the evidence for other conditions isn't clear yet. If you take an MAOI antidepressant, blood sugar medication, lithium, or antifungals, check your specific drugs with us first — the interactions can be serious.

Otherwise, it's generally well tolerated; gas and headaches are the most common complaints.

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 Dec 21, 2012.

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 Dr. Cutler's EpiCor Immune Support, straight from the product label.

Brand True Health
Net contents 30 Capsule(s)
Market status On market
Date entered into DSLD Dec 21, 2012
DSLD ID 16682
Product type Non-nutrient/non-botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
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 Dr. Cutler's EpiCor Immune Support by True 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:
1 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
Servings per container
30
IngredientAmount% DV
Dried Yeast Fermentate500 mg--

Other ingredients: Gelatin

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.
General Statements

Immune System Support*

This product is manufactured in a NSF GMP registered facility.

Contains the World's Finest Ingredients

Precautions

KEEP OUT OF REACH OF CHILDREN.

Caution: If you are taking medication or have a medical condition, consult with your healthcare professional before taking this or any other dietary supplement.

Storage

STORE IN A COOL, DRY PLACE.

FDA Disclaimer Statement

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Seals/Symbols

MADE IN U.S.A.

SCIENTIFICALLY FORMULATED DOCTOR APPROVED

General

300-TEPCC-A

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Suggested Use: Take one capsule daily.

Brand IP Statement(s)

EpiCor(R) is a registered trademark of Embria Health Sciences, Cedar Rapids, IA, USA.

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

See for yourself

Dr. Cutler's EpiCor Immune Support by True Health label

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

Dr. Cutler's EpiCor Immune Support 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 Dr. Cutler's EpiCor Immune Support by True Health

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

Serving size1 Capsule(s) Dosage formCapsule Servings per container30 Amounts shown are per serving.

Dried Yeast Fermentate

Interacts with
136 drugs
500 mg per serving

Brewer's yeast is a nutrient-rich fungus that provides B vitamins, protein, and minerals, and a related yeast product (S. boulardii) is used for some...

Dried Yeast Fermentate monograph & interactions

Other (inactive) ingredients: Gelatin. These complete the product’s ingredient list but are not active constituents.

Interaction report

Dr. Cutler's EpiCor Immune Support by True Health Drug Interactions

Want to check YOUR meds against Dr. Cutler's EpiCor Immune Support?

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
136Drugs
9 Major 87 Moderate 40 Minor

Ingredients driving the most interactions

Dried Yeast Fermentate 136

Individual Drug Interactions

The ingredients in Dr. Cutler's EpiCor Immune Support interact with 136 drugs. Click any drug to see the details.

1 of the 1 ingredient in Dr. Cutler's EpiCor Immune Support interact with drugs. Each result below shows which ingredient is responsible. Dried Yeast Fermentate

Each ingredient & the kinds of drugs it affects

For each ingredient in Dr. Cutler's EpiCor Immune Support 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.

Dried Yeast Fermentate4 drug types · 136 drugs

Monoamine Oxidase Inhibitors (Maois)

Theoretically, taking brewer's yeast with MAOIs might increase the risk of hypertension.
Brewer's yeast contains tyramine. Taking brewer's yeast with MAOIs might increase the risk for hypertensive crisis.

Likelihood Likely Evidence D
Antidiabetes Drugs

Taking brewer's yeast with antidiabetes drugs might increase the risk of hypoglycemia.
Clinical research shows that taking chromium-containing brewer's yeast can decrease levels of blood glucose in diabetic patients being treated with antidiabetes drugs.

Likelihood Possible Evidence B
Lithium

Theoretically, taking brewer's yeast with lithium might cause additive effects and side effects.
Some brewer's yeast products contains lithium.

Likelihood Possible Evidence D
Antifungals

Theoretically, taking antifungals with some brewer's yeast products might decrease the effectiveness of brewer's yeast.
Some brewer's yeast products contain live yeast. Therefore, simultaneously taking antifungals might kill a significant number of the organisms.

Likelihood Possible Evidence D
Dried Yeast Fermentate full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Dr. Cutler's EpiCor Immune Support, from the product label.

True Health

See all True Health products
Name
True Health(TM)
Street Address
P.O. Box 3703
City
Hueytown
State
AL
ZipCode
35023
Phone Number
1-800-746-4513
Web Address
www.TrueHealth.com
Pharmacist Counseling Corner

Dr. Cutler's EpiCor Immune Support by True Health: Common Questions

Does Dr. Cutler's EpiCor Immune Support by True Health interact with any medications?
Yes. Based on its ingredients, Dr. Cutler's EpiCor Immune Support has a known interaction with 136 medications, including 9 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Dr. Cutler's EpiCor Immune Support 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.
What exactly is dried yeast fermentate?
It's the leftover yeast cells from beer brewing — the yeast is dead, not alive, but it retains B vitamins, minerals, and other compounds. Some products keep trace amounts of live yeast, which is why antifungal medications can interfere with it.
Can I take this if I'm pregnant?
Food amounts of brewer's yeast are likely fine during pregnancy, but we don't have solid safety data on concentrated supplement doses. Talk with your doctor or midwife before starting to make sure it's right for you.
Will this help my IBS?
Possibly — brewer's yeast is rated possibly effective for IBS based on clinical research. For other conditions like high cholesterol or hay fever, the evidence we have isn't strong enough yet to say whether it works.
What side effects should I watch for?
Gas and flatulence are the most common complaints, along with occasional migraine-like headaches. Serious side effects are rare, but stop taking it and contact your doctor if you have signs of an allergic reaction (trouble breathing, swelling) or unusual infections.
Is this safe for people with weakened immune systems?
No — brewer's yeast is not recommended for people with certain immune conditions because of a theoretical risk of fungal infection. If your immune system is compromised, ask your doctor or pharmacist before taking it.

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

Not sure if Dr. Cutler's EpiCor Immune Support is safe with your meds?

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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.

Dr. Cutler's EpiCor Immune Support label
Go deeper

The Full Monographs Behind Dr. Cutler's EpiCor Immune Support’s Ingredients

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

Herb & supplement monograph

Brewer's Yeast

Interacts with 136 drugs

Brewer's yeast is a nutrient-rich fungus that provides B vitamins, protein, and minerals, and a related yeast product (S. boulardii) is used for some types of diarrhea. Most other health cla...

Read the full Brewer's Yeast monograph →
Sources

Sources & How We Checked

Dr. Cutler's EpiCor Immune Support'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 6 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.

Brewer's Yeast 6 references
  1. Blumenthal M, ed. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Trans. S. Klein. Boston, MA: American Botanical Council, 1998.
  2. Lewis SJ, Freedman AR. Review article: the use of biotherapeutic agents in the prevention and treatment of gastrointestinal disease. Aliment Pharmacol Ther 1998;12:807-22. PubMed
  3. Bahijiri, S. M., Mira, S. A., Mufti, A. M., and Ajabnoor, M. A. The effects of inorganic chromium and brewer's yeast supplementation on glucose tolerance, serum lipids and drug dosage in individuals with type 2 diabetes. Saudi.Med.J. 2000;21(9):831-837. DOI
  4. Schrauzer, G. N. and de, Vroey E. Effects of nutritional lithium supplementation on mood. A placebo-controlled study with former drug users. Biol.Trace Elem.Res. 1994;40(1):89-101. PubMed
  5. Gayathri R, Aruna T, Malar S, Shilpa B, Dhanasekar KR. Efficacy of Saccharomyces cerevisiae CNCM I-3856 as an add-on therapy for irritable bowel syndrome. Int J Colorectal Dis. 2020;35(1):139-145. PubMed
  6. Mourey F, Decherf A, Jeanne JF, et al. Saccharomyces cerevisiae I-3856 in irritable bowel syndrome with predominant constipation. World J Gastroenterol 2022;28(22):2509-2522.

See these in context on the Brewer's Yeast 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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