Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

Maitake Ingredients & Drug Interactions

by Om Mushroom Superfood

Maitake label
See full label image
Powder Category: Botanical
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 Maitake 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

Maitake is a dietary supplement by Om Mushroom Superfood with 1 active ingredient. Its ingredients are commonly taken for immune support, blood sugar support in diabetes, high blood pressure.Based on those ingredients, 260 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Maitake, Powder. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Maitake by Om Mushroom Superfood

Ask about any prescription or over-the-counter medication and we check it for interactions with Maitake by Om Mushroom Superfood — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Maitake by Om Mushroom Superfood

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 Aug 20, 2026

What’s inside

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 0 of its 1 active ingredient.
  • “Certified Organic Mushroom Powder Blend” is a proprietary blend — the label gives one combined amount (2 Gram(s)) without saying how much of each component you get.

This product is a single-ingredient powder: certified organic maitake mushroom. Maitake is a medicinal fungus traditionally used in Asia and now studied for immune and metabolic effects.

The powder also contains myceliated oats as an inactive ingredient (a carrier for the mushroom material).

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 Maitake Mushroom's own graded uses on its monograph.

Why this rating?
  • The label markets this product for: Supports weight and blood sugar management.
  • We looked for evidence on: Diabetes, Obesity, Hyperlipidemia, Hypertension, Metabolic syndrome, Glucose control.
  • The closest evidence on file: Maitake Mushroom is rated "Insufficient Reliable Evidence To Rate" for Diabetes (Natural Medicines).
  • Also on file: Maitake Mushroom is rated "Insufficient Reliable Evidence To Rate" for Hyperlipidemia, Hypertension, Obesity.

The evidence we hold doesn't establish that maitake mushroom works reliably for any condition. Effectiveness ratings for hay fever, various chemotherapy side effects (anemia, diarrhea), and chronic fatigue syndrome all show insufficient reliable evidence — meaning the studies so far aren't strong or complete enough to say whether it actually helps.

If you're considering this for a specific health goal, talk it over with your doctor or pharmacist to see what the broader research shows.

The evidence, ingredient by ingredient Maitake Mushroom

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.

Maitake mushroom is generally well tolerated when used as food, though concentrated supplement safety hasn't been fully studied. In clinical trials, a small number of participants reported gastrointestinal upset (diarrhea, stomach pain, nausea), and one person developed a rash and itching after two doses that cleared on its own.

The safety data advises against use during pregnancy and breastfeeding because there isn't enough information to know it's safe — talk with your doctor or pharmacist if you're pregnant, planning pregnancy, or nursing and want personalized advice.

Side effects, ingredient by ingredient Maitake Mushroom

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 — Maitake Mushroom.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications.
  • For scale: 260 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 with your doctor or pharmacist if you take blood pressure medications, diabetes drugs (including insulin), or warfarin. These are the main medication types where maitake mushroom poses a documented Moderate-severity interaction risk.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.

Maitake mushroom may be worth exploring if you're interested in immune support and your doctor or pharmacist gives you the green light. However, if you take blood pressure meds, diabetes drugs, or warfarin, you'll need to check with your own healthcare provider first — the interaction risk is real.

Even if you have no medications, know that concentrated supplements in pregnancy and breastfeeding aren't recommended due to insufficient safety data.

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 Aug 23, 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 Maitake, straight from the product label.

Brand Om Mushroom Superfood
Barcode (UPC) 850030553263
Net contents 200 Gram(s); 7.05 Ounce(s)
Market status On market
Date entered into DSLD Aug 23, 2022
DSLD ID 271936
Product type Botanical
Supplement form Powder
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Vegan, Vegetarian, Adult (18 - 50 Years), Kosher, Organic, 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 Maitake by Om Mushroom Superfood, 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 Gram(s)
Maximum serving Sizes:
4 Gram(s)
Servings per container
100
UPC/BARCODE
850030553263
IngredientAmount% DV
Calories10 Calorie(s)--
Certified Organic Mushroom Powder Blend2 Gram(s)--
Maitake, Powder0 NP--

Other ingredients: Oats, Myceliated

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.
Seals/Symbols

USDA Organic Non GMO Project Verified nongmoproject.org

Grown in USA

EarthKosher

Formula

Om grown mushroom blend 2,000 mg per serving See Supplement Facts

KETO Keto-Friendly PF Paleo-Friendly

The Superfoodie of Superfoods. Mushrooms contain many unique bioactive nutrients that can't be found in plant or animal sources alone. Each serving of Om provides 2,000 mg of Certified Organic Mushroom Powder Blend.

Maitake Your weight mate. Maitake is a well-researched functional mushroom. Used by traditional herbalists to help with weight management and blood sugar support, it's a naturally potent source of polysaccharides that help promote gut health. Maitake is especially effective when combined with a calorie-controlled diet and regular exercise. It's your weight mate.

Certified Kosher by Earth Kosher

Formulation

Supports Weight & Blood Sugar Management

Certified Organic Mushroom Powder

Gluten Free

Vegan

Tested for heavy metals. Complete transparency ID testing.

We grow our OM. We grow a diverse range of organic mushroom species at our indoor farm in California and capture the complete nutritional value of the growing cycle. Whole food mushrooms are important because they provide a full spectrum of active compounds to support optimal health. So you can bet you beta glucans they're effective.

Non GMO Project Verified

Mushroom your microbiome. Functional without anything funky added. No nutrients left behind.

Certified Organic by Organic Certifiers

FDA Statement of Identity

Dietary Supplement

General Statements

What's a beta glucan? Find out at OmMushrooms.com

Packaged with recycled materials

Scan code to learn more Facebook Instagram @OmMushrooms OmMushrooms.com

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.

Precautions

Take as directed.

If you have a medical condition, are on medication or are pregnant or nursing, please seek the direction of a qualified health care professional before using.

Storage

Store in a cool, dry place.

Suggested/Recommended/Usage/Directions

Scoop. Stir. Ommm your daily ritual. Add 2 grams (approx. 1 tsp) daily to super your smoothie, mushroom your matcha, boost your coffee and nourish your recipes. For optimal support, take 4 grams (approx. 2 tsp) per day.

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

See for yourself

Maitake by Om Mushroom Superfood label

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

Maitake 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 Maitake by Om Mushroom Superfood

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

Serving size2 Gram(s) Dosage formPowder Servings per container100 Amounts shown are per serving.

Certified Organic Mushroom Powder Blend

2 Gram(s) per serving

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

Interaction report

Maitake by Om Mushroom Superfood Drug Interactions

Want to check YOUR meds against Maitake?

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
260Drugs
260 Moderate

Ingredients driving the most interactions

Maitake, Powder 260

Individual Drug Interactions

The ingredients in Maitake interact with 260 drugs. Click any drug to see the details.

1 of the 1 ingredient in Maitake interact with drugs. Each result below shows which ingredient is responsible. Maitake, Powder

Each ingredient & the kinds of drugs it affects

For each ingredient in Maitake 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.

Maitake, Powder3 drug types · 260 drugs

Antidiabetes Drugs

Theoretically, combining maitake mushroom with antidiabetes drugs might increase the risk of hypoglycemia.
Clinical research shows that taking maitake mushroom polysaccharide (MMP) can lower blood glucose levels in patients with types 2 diabetes.

Likelihood Possible Evidence B
Antihypertensive Drugs

Theoretically, combining maitake mushroom with antihypertensive drugs might increase the risk of hypotension.
Animal research shows that maitake mushroom can lower blood pressure.

Likelihood Possible Evidence D
Warfarin (Coumadin)

There is limited evidence that maitake mushroom may increase the anticoagulant effects of warfarin.
In a case report, a patient previously stabilized on warfarin developed an elevated international normalized ratio (INR) of 5.1 after taking maitake mushroom (Grifron-Pro Maitake D-Fraction) 1 drop/kg daily in three divided doses for one week. The elevated INR resolved after holding warfarin for two days, then reducing the dose by 11%. It is thought that the beta-glucan constituent of maitake mushroom might cause warfarin dissociation from proteins, resulting in increased free warfarin levels and increased warfarin effects.

Likelihood Possible Evidence D
Maitake, Powder full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Maitake, from the product label.

Om Mushroom Superfood

See all Om Mushroom Superfood products
Name
Om Mushroom Superfood
Street Address
5931 Priestly Dr. #101
City
Carlsbad
State
CA
ZipCode
92008
Web Address
OmMushrooms.com
Pharmacist Counseling Corner

Maitake by Om Mushroom Superfood: Common Questions

Does Maitake by Om Mushroom Superfood interact with any medications?
Yes. Based on its ingredients, Maitake has a known interaction with 260 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Maitake 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.
Can I take this if I'm pregnant or breastfeeding?
The safety data advises against concentrated maitake supplements during pregnancy and breastfeeding because there isn't enough research to know whether they're safe. Talk with your doctor or pharmacist about your individual situation before taking it.
What side effects might I experience?
Maitake is generally well tolerated, but stomach upset — including diarrhea, stomach pain, and nausea — was reported by a small number of trial participants. One person also developed a rash and itching after two doses, which cleared without treatment.
Does maitake actually work for anything?
The evidence we hold doesn't establish that maitake reliably treats the conditions studied so far (hay fever, chemotherapy side effects, chronic fatigue). The data shows insufficient evidence for these uses, so we can't say whether it works based on current research.
What is maitake mushroom?
Maitake is a medicinal fungus used traditionally in Asia and now studied for immune and metabolic effects. This product is a powder made from the whole or processed mushroom.
Why do I need to check my blood pressure or diabetes medications with this?
Maitake can lower blood pressure and blood sugar. If you're already taking drugs for either condition, combining them might lower your pressure or glucose too much, raising the risk of dizziness or low blood sugar. Your doctor or pharmacist can tell you whether it's safe for you.

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

Not sure if Maitake 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.

Maitake label
Go deeper

The Full Monographs Behind Maitake’s Ingredients

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

Herb & supplement monograph

Maitake Mushroom

Interacts with 260 drugs

Maitake is an edible mushroom long used as food and in traditional Japanese medicine, and it is being studied for possible immune, blood sugar, and blood pressure effects. The human evidence...

Read the full Maitake Mushroom monograph →
Sources

Sources & How We Checked

Maitake'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 8 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.

Maitake Mushroom 8 references
  1. Kabir Y, Kimura S. Dietary mushrooms reduce blood pressure in spontaneously hypertensive rats (SHR). J Nutr Sci Vitaminol (Tokyo) 1989;35:91-4. PubMed
  2. Kabir Y, Yamaguchi M, Kimura S. Effect of shiitake (Lentinus edodes) and maitake (Grifola frondosa) mushrooms on blood pressure and plasma lipids of spontaneously hypertensive rats. J Nutr Sci Vitaminol (Tokyo) 1987;33:341-6. PubMed
  3. Konno S, Tortorelis DG, Fullerton SA, et al. A possible hypoglycaemic effect of maitake mushroom on Type 2 diabetic patients. Diabet Med 2001;18:1010. PubMed
  4. Chen JT, Tominaga K, Sato Y, et al. Maitake mushroom (Grifola frondosa) extract induces ovulation in patients with polycystic ovary syndrome: a possible monotherapy and a combination therapy after failure with first-line clomiphene citrate. J Altern Compl
  5. Hanselin MR, Vande Griend JP, Linnebur SA. INR elevation with maitake extract in combination with warfarin. Ann Pharmacother 2010;44:223-4. PubMed
  6. Talpur, N. A., Echard, B. W., Fan, A. Y., Jaffari, O., Bagchi, D., and Preuss, H. G. Antihypertensive and metabolic effects of whole Maitake mushroom powder and its fractions in two rat strains. Mol.Cell Biochem. 2002;237(1-2):129-136. PubMed
  7. Deng, G., Lin, H., Seidman, A., Fornier, M., D'Andrea, G., Wesa, K., Yeung, S., Cunningham-Rundles, S., Vickers, A. J., and Cassileth, B. A phase I/II trial of a polysaccharide extract from Grifola frondosa (Maitake mushroom) in breast cancer patients: i
  8. Wesa KM, Cunningham-Rundles S, Klimek VM, et al. Maitake mushroom extract in myelodysplastic syndromes (MDS): a phase II study. Cancer Immunol Immunother 2015;64(2):237-47. PubMed

See these in context on the Maitake Mushroom 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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