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Dietary supplement

Maitake D Fraction Standard Ingredients & Drug Interactions

by Mushroom Wisdom

Maitake D Fraction Standard label
See full label image
Liquid 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 D Fraction Standard 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 D Fraction Standard is a dietary supplement by Mushroom Wisdom 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 PD-Fraction. 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 D Fraction Standard by Mushroom Wisdom

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

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HelloPharmacist Scorecard of Maitake D Fraction Standard by Mushroom Wisdom

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

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: PD-Fraction, a concentrated extract from maitake mushroom. The rest is glycerin and water, which are inactive ingredients (excipients that help deliver the extract in liquid form).

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 healthy immune system.
  • We looked for evidence on: HIV/AIDS, Coronavirus disease 2019 (COVID-19), Chemotherapy-induced leukopenia, immune function, infection risk, immunocompromised states.
  • The closest evidence on file: Maitake Mushroom is rated "Insufficient Reliable Evidence To Rate" for HIV/AIDS (Natural Medicines).
  • Also on file: Maitake Mushroom is rated "Insufficient Reliable Evidence To Rate" for Chemotherapy-induced leukopenia, Coronavirus disease 2019 (COVID-19).

The evidence we hold doesn't establish that maitake works for hay fever, chemotherapy-related anemia, laryngeal cancer, or chemotherapy-induced diarrhea — the rating for each is insufficient reliable evidence. We don't have effectiveness data for chronic fatigue syndrome either.

If you're thinking about this product for one of those conditions, there isn't enough solid evidence here to say whether it'll help.

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 eaten as food, but the safety of concentrated supplements hasn't been fully studied. The most common side effects reported in clinical trials were gastrointestinal — diarrhea and stomach pain (epigastric discomfort).

A small number of trial participants also reported nausea, and one person experienced a rash and itching that went away on its own. One participant withdrew from a trial because of diarrhea.

There isn't enough safety data to recommend this concentrated supplement during pregnancy or while breastfeeding. If you're pregnant or nursing, talk with your doctor or pharmacist before starting it.

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.

Check with your doctor or pharmacist before taking this product if you're on warfarin (Coumadin) or any blood thinner — there's documented risk of increased bleeding. Also flag any blood pressure medications and diabetes medications; maitake can lower both, and combining it with drugs that do the same may cause dangerously low readings or blood sugar.

No other interactions are documented for the ingredients we could check.

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.

Maitake D Fraction is worth considering if you're interested in immune support, but you need to check it against your medications first — especially blood thinners, blood pressure drugs, and diabetes medications. The side effects are generally mild and digestive.

Talk with your doctor or pharmacist before adding it to your routine, especially if you take any of those drug types or are pregnant or breastfeeding.

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 Feb 22, 2024.

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 D Fraction Standard, straight from the product label.

Brand Mushroom Wisdom
Barcode (UPC) 791014104203
Net contents 60 mL
Market status On market
Date entered into DSLD Feb 22, 2024
DSLD ID 305224
Product type Botanical
Supplement form Liquid
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Vegetarian, Adult (18 - 50 Years), Gluten Free, Dairy 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 D Fraction Standard by Mushroom Wisdom, 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:
20 Drop(s)
Maximum serving Sizes:
20 Drop(s)
Servings per container
82
UPC/BARCODE
791014104203
IngredientAmount% DV
PD-Fraction18.3 mg--

Other ingredients: Glycerin, Water

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.
Brand IP Statement(s)

Mushroom Wisdom Science complementing ancient wisdom

Formula

Maitake D-Fraction, a proprietary extract from the maitake mushroom (Grifola frondosa), is one of nature's most potent and effective immune system supporting constituents. It is a unique protein-bound Beta 1,3/1,6 glucan that research has shown to support overall healthy immune function.

Formulation

Mushroom Wisdom, with over 25 years of mushroom expertise, is committed to offering you the finest and most effective supplements, manufacturing them in a certified cGMP facility.

Supports healthy immune system

Suitable for vegetarians

Contains no gluten, wheat, soy, dairy, artificial colors, flavors or preservatives

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.

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Directions: 20 drops, three times a day or as directed by your practitioner.

Precautions

Warning: Keep out of reach of children.

Consult a physician before using if pregnant or nursing.

Do not use if seal is broken or missing.

Storage

Store in a cool dry place.

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

See for yourself

Maitake D Fraction Standard by Mushroom Wisdom label

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

Maitake D Fraction Standard 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 D Fraction Standard by Mushroom Wisdom

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

Serving size20 Drop(s) Dosage formLiquid Servings per container82 Amounts shown are per serving.

PD-Fraction

Interacts with
260 drugs
18.3 mg per serving Form: Maitake Fruiting Body Extract

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 bl...

PD-Fraction monograph & interactions

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

Interaction report

Maitake D Fraction Standard by Mushroom Wisdom Drug Interactions

Want to check YOUR meds against Maitake D Fraction Standard?

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

PD-Fraction 260

Individual Drug Interactions

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

1 of the 1 ingredient in Maitake D Fraction Standard interact with drugs. Each result below shows which ingredient is responsible. PD-Fraction

Each ingredient & the kinds of drugs it affects

For each ingredient in Maitake D Fraction Standard 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.

PD-Fraction3 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
PD-Fraction full monograph & interactions
The maker

Brand information

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

Mushroom Wisdom

See all Mushroom Wisdom products
Name
Mushroom Wisdom, Inc.
Street Address
1 Madison St., Bldg. F6
City
E. Rutherford
State
NJ
ZipCode
07073
Phone Number
800-747-7418
Web Address
www.mushroomwisdom.com
Pharmacist Counseling Corner

Maitake D Fraction Standard by Mushroom Wisdom: Common Questions

Does Maitake D Fraction Standard by Mushroom Wisdom interact with any medications?
Yes. Based on its ingredients, Maitake D Fraction Standard 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 D Fraction Standard 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 is PD-Fraction?
PD-Fraction is a concentrated extract from maitake mushroom, an edible fungus. It's the active ingredient in this product and contains compounds (polysaccharides) that appear to affect blood pressure and blood sugar levels.
Can I take this if I'm on warfarin?
Not without checking first. A case report shows that maitake mushroom increased warfarin's blood-thinning effect in one patient, raising bleeding risk. Talk to your doctor or pharmacist before starting this product if you're on warfarin or any blood thinner — they'll tell you whether it's safe for you.
What are the side effects?
The most common are digestive issues — diarrhea and stomach discomfort. A small number of people in clinical trials also reported nausea, and one person had a rash and itching that cleared on its own. One participant dropped out because of diarrhea.
Is it safe during pregnancy or while breastfeeding?
There isn't enough safety data for concentrated maitake supplements in pregnancy or while breastfeeding. Talk with your doctor or pharmacist for personalized advice if you're in either situation.
Does this product work for chronic fatigue or to boost immunity?
The evidence we hold doesn't establish that maitake works for those conditions — we don't have reliable data on it yet. If immunity or fatigue is your goal, chat with your doctor about whether this fits your situation.

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

Not sure if Maitake D Fraction Standard 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.

Maitake D Fraction Standard label
Go deeper

The Full Monographs Behind Maitake D Fraction Standard’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 D Fraction Standard'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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