Shiitake Extract Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Shiitake Extract 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
Shiitake Extract is a dietary supplement by Host Defense Mushrooms with 2 active ingredients. Its ingredients are commonly taken for immune support, general wellness and nutrition, cholesterol and heart health.Based on those ingredients, 312 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are fresh Shiitake (Lentinula edodes) mycelium extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Shiitake Extract by Host Defense Mushrooms
Ask about any prescription or over-the-counter medication and we check it for interactions with Shiitake Extract by Host Defense Mushrooms — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of Shiitake Extract by Host Defense Mushrooms
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.
What’s inside
Low disclosure
This liquid supplement contains 2 active ingredients: fresh shiitake (Lentinula edodes) mycelium extract and dried shiitake fruitbody extract. Both are forms of the same medicinal mushroom and contribute to the product's effects.
The blend is suspended in water and alcohol, with myceliated brown rice listed as an inactive ingredient.
Does it work?
Couldn't assess
The evidence for shiitake mushroom is limited. For dental plaque, it's rated possibly ineffective.
For several conditions—including chemotherapy-induced anemia, atherosclerosis, breast cancer, and cancer in general—there isn't enough reliable evidence to rate whether it works. If you're considering this product for a specific health goal, talk with your doctor or pharmacist about what the current research actually supports.
How safe is it?
Well-documented data
When shiitake is eaten as cooked food, it's generally well tolerated. As a concentrated supplement at doses we don't have solid safety data for, caution is advised.
The most common side effects from oral use are abdominal discomfort, bloating, diarrhea, nausea, and vomiting. Rarely, eating raw shiitake can cause shiitake dermatitis—a distinctive skin eruption with whip-like marks—or, if pieces aren't chewed well, intestinal blockage.
Some people may have allergic reactions—contact dermatitis, asthma, rhinitis, or conjunctivitis—especially those who handle mushrooms frequently. The product facts do not provide pregnancy or breastfeeding safety information for this ingredient.
Meds to double-check
Moderate interaction found
Check with your doctor or pharmacist if you take immunosuppressants (medications that weaken your immune system on purpose, like those for transplant or severe autoimmune disease) or drugs metabolized by the liver enzyme CYP2D6, which includes many common antidepressants, certain heart medications, and other drugs. Both are Moderate-severity concerns.
Altogether, these interactions span 312 individual medications.
The bottom line
Scorecard at a glanceFormula with limited ingredient disclosure with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
Shiitake Extract may be worth considering if you're interested in mushroom-based supplements and have no medications that interact with it. If you take immunosuppressants or drugs metabolized by CYP2D6—a large group that includes many antidepressants and heart medications—you need to check with your doctor or pharmacist before starting.
Be aware that most claimed benefits lack strong evidence, and concentrated doses haven't been studied thoroughly for safety.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Feb 25, 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
General information
Key facts about Shiitake Extract, straight from the product label.
| Brand | Host Defense Mushrooms |
|---|---|
| Net contents | 2 fl. Oz.; 60 mL |
| Market status | On market |
| Date entered into DSLD | Feb 25, 2019 |
| DSLD ID | 200108 |
| Product type | Non-nutrient/non-botanical |
| Supplement form | Liquid |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Organic, Gluten Free |
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 Shiitake Extract by Host Defense Mushrooms, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Proprietary Blend | 1 mL | -- |
| fresh Shiitake (Lentinula edodes) mycelium extract | 0 NP | -- |
| dried Shiitake (Lentinula edodes) fruitbody extract | 0 NP | -- |
Other ingredients: Water, Alcohol, myceliated Brown Rice
Tap any ingredient to jump to its full detail below.
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
Made with U.S. grown, triple extracted organic mushroom mycelium and fruitbodies
Suggested/Recommended/Usage/Directions
Directions for Use: As a dietary supplement, take 1 mL twice per day. Can be taken with food or without, on an empty stomach or as recommended by your healthcare advisor. Shake well before using, refrigerate after opening.
Storage
Shake well before using, refrigerate after opening.
Precautions
Consult your healthcare advisor regarding the use of this product during pregnancy.
Keep out of reach of children.
General
NXLE2 REV A2
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
USDA Organic
Producer Certified Organic Washington State Dept. of Agriculture
General Statements
Immune support
Formulation
Gluten free
Certified Organic by the Washington State Department of Agriculture.
FDA Statement of Identity
Dietary Supplement
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Shiitake Extract by Host Defense Mushrooms label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
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)The Ingredients in Shiitake Extract by Host Defense Mushrooms
These are the 2 active ingredients this product is made of. Select any to open its full monograph.
Serving size1 mL Dosage formLiquid 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.
Other (inactive) ingredients: Water, Alcohol, Myceliated Brown Rice. These complete the product’s ingredient list but are not active constituents.
Shiitake Extract by Host Defense Mushrooms Drug Interactions
HelloPharmacist Interaction Report
Host Defense Mushrooms Shiitake Extract contains shiitake mushroom in two forms—fresh mycelium and dried fruitbody—both of which interact with medications.
The most serious concern is with immunosuppressants (Moderate severity): the shiitake extracts may theoretically decrease how well these drugs work by stimulating your immune system, which is the opposite of what you need if you're taking them to prevent rejection or control an autoimmune condition.
Read the full breakdown — every affected drug type, severity by severity
The second major interaction involves drugs metabolized by the liver enzyme CYP2D6 (Moderate severity). Lab studies suggest shiitake extract might speed up how your body breaks down these medications, potentially lowering their levels in your blood and making them less effective.
This enzyme handles a large number of common drugs, so this is worth checking carefully.
Alternative ways that drug metabolism or immune function are affected should also be reviewed with your pharmacist before you start. Use the medication checker below to look up your exact prescriptions.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Shiitake Extract?
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 checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Shiitake Extract interact with 312 drugs. Click any drug to see the details.
1 of the 2 ingredients in Shiitake Extract interact with drugs. Each result below shows which ingredient is responsible. fresh Shiitake (Lentinula edodes) mycelium extract
6-mercaptopurinePurinethol
How 6-mercaptopurine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, taking shiitake mushroom might decrease the effects of immunosuppressive therapy.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + 6-mercaptopurine interactionAbrocitinibCibinqo
How Abrocitinib interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, taking shiitake mushroom might decrease the effects of immunosuppressive therapy.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Abrocitinib interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, Butalbital, CodeineBancap w/ Codeine
How Acetaminophen, Butalbital, Codeine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Butalbital, Codeine interactionAcetaminophen, Butalbital, Codeine PhosphatePhrenilin #3
How Acetaminophen, Butalbital, Codeine Phosphate interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Butalbital, Codeine Phosphate interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionAcetaminophen, Caffeine, CodeineGesic C15, Gesic C30, Gesic C8, Lenoltec 1, Lenoltec 2, Lenoltec 3 +1 more
How Acetaminophen, Caffeine, Codeine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Caffeine, Codeine interactionAcetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3
How Acetaminophen, Caffeine, Codeine, Salicylamide interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAcetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS
How Acetaminophen, Caffeine, Dihydrocodeine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Caffeine, Dihydrocodeine interactionAcetaminophen, Chlorpheniramine Maleate, Dextromethorphan HbrVicks Formula 44M Cough, Cold & Flu Relief
How Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAcetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex
How Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAcetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PseudoephedrineChildren's Tylenol Cold Plus Cough, Tylenol Cold Ex Strength
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Chlorzoxazone, CodeineAcetazone Forte C8, Parafon Forte C8
How Acetaminophen, Chlorzoxazone, Codeine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Chlorzoxazone, Codeine interactionAcetaminophen, CodeineTylenol No.3, Tylenol w/ Codeine
How Acetaminophen, Codeine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Codeine interactionAcetaminophen, Codeine, DoxylamineMersyndol
How Acetaminophen, Codeine, Doxylamine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Codeine, Doxylamine interactionAcetaminophen, Codeine, MethocarbamolAcetaminophen, Codeine, Methocarbamol, Robaxacet 8
How Acetaminophen, Codeine, Methocarbamol interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Codeine, Methocarbamol interactionAcetaminophen, DextromethorphanTylenol Cough Ex Strength
How Acetaminophen, Dextromethorphan interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Dextromethorphan interactionAcetaminophen, Dextromethorphan, Doxylamine, PseudoephedrineVicks NyQuil
How Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylephrineConar-A
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylpropanolamineAnatuss
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PseudoephedrineRobitussin Cold, Severe Cold, Suphedrine Cold/Cough
How Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Phenylpropanolamine, PyrilamineTheracaps
How Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interactionAcetaminophen, Dextromethorphan, PseudoephedrineAlka-Seltzer PLUS Flu Liquid Gels, Non Aspirin Cold Caps, Tylenol Cold, Tylenol Flu Daytime Ex Strength, Tylenol Flu Ex Strength
How Acetaminophen, Dextromethorphan, Pseudoephedrine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, HydrocodoneAnexsia, Anodynos DHC, Azdone, Co-Gesic, Doucet, Lorcet +9 more
How Acetaminophen, Hydrocodone interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Hydrocodone interactionAcetaminophen, MeperidineDemerol APAP
How Acetaminophen, Meperidine interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Meperidine interactionAcetaminophen, OxycodonePercocet, Roxicet, Tylox, Xartemis XR
How Acetaminophen, Oxycodone interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Oxycodone interactionAcetaminophen, PropoxypheneDarvocet-N 100, Darvocet-N 50, E-Lor, Wygesic
How Acetaminophen, Propoxyphene interacts with Shiitake Extract — through 1 ingredient. Tap an ingredient for the detail:
Dried Shiitake (lentinula Edodes) Fruitbody ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Dried Shiitake (lentinula Edodes) Fruitbody Extract + Acetaminophen, Propoxyphene interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Shiitake Extract 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.
fresh Shiitake (Lentinula edodes) mycelium extract
Cytochrome P450 2D6 (Cyp2D6) Substrates
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
In vitro studies suggest that the shiitake mushroom extract AHCC might induce the CYP2D6 enzyme. This effect has not been reported in humans.
Immunosuppressants
Theoretically, taking shiitake mushroom might decrease the effects of immunosuppressive therapy.
In vitro evidence suggests that shiitake mushroom extracts stimulate immune function.
Brand information
Manufacturer and brand details for Shiitake Extract, from the product label.
Host Defense Mushrooms
See all Host Defense Mushrooms products- Name
- Fungi Perfecti, LLC
- Street Address
- PO Box 7634
- City
- Olympia
- State
- WA
- ZipCode
- 98507
- Phone Number
- 877-504-6926
- Web Address
- Hostdefense.com
Shiitake Extract by Host Defense Mushrooms: Common Questions
Does Shiitake Extract by Host Defense Mushrooms interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Can I take this if I'm on a blood thinner or heart medication?
What are the most common side effects?
Is this safe to take as a concentrated supplement?
Does it actually work for cancer or chemotherapy side effects?
Can I take this while pregnant or breastfeeding?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Shiitake Extract is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
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.
The Full Monographs Behind Shiitake Extract’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Shiitake Extract'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.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
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 67 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.
Shiitake Mushroom 67 references
- Hitosugi M, Kitamura O, Takatsu A, Yoshino Y. Autopsy case of duodenal obstruction from impacted mushroom. J Gastroenterol 1998;33:562-5. PubMed
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