Shiitake Ingredients & Drug Interactions
by Herbal Terra
What is this page for?
First and foremost: checking Shiitake 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 is a dietary supplement by Herbal Terra with 1 active ingredient. 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 certified organic Shiitake (Lentinula edodes) dried mushroom liquid extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Shiitake by Herbal Terra
Ask about any prescription or over-the-counter medication and we check it for interactions with Shiitake by Herbal Terra — 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 by Herbal Terra
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
Full disclosure
This product contains one active ingredient: certified organic Shiitake mushroom (Lentinula edodes) in a concentrated dried liquid extract form. The liquid is suspended in menstruum, an inactive carrier ingredient.
Does it work?
Couldn't assess
The evidence for shiitake's effectiveness varies widely depending on the condition. It's rated possibly ineffective for dental plaque.
For chemotherapy-induced anemia, atherosclerosis, and breast cancer, there isn't enough reliable evidence yet to say whether it works. The same goes for general cancer support — the data we hold doesn't establish effectiveness for these uses.
How safe is it?
Well-documented data
Shiitake is generally well tolerated when cooked and eaten as a food. Concentrated supplements carry more uncertainty because there's limited safety data on supplement-level doses.
The most common side effects from oral use are abdominal discomfort, bloating, diarrhea, nausea, and vomiting. Rare but serious concerns include shiitake dermatitis (a skin rash with whip-like marks) from eating raw mushroom, and contact or inhalation allergies — including asthma, stuffy nose, eye irritation, and in mushroom workers, a lung condition from spore exposure.
Because safety data on concentrated supplements is sparse, talk with your doctor or pharmacist before taking this if you're pregnant, nursing, or have a history of mushroom allergies.
Meds to double-check
Moderate interaction found
Before taking this product, double-check with your doctor or pharmacist if you take immunosuppressants (used after transplants or for certain autoimmune disorders) or medications metabolized by the CYP2D6 enzyme — a moderately sized drug group including some antidepressants, beta-blockers, and antiarrhythmics. Altogether, these interactions span 312 individual medications.
The bottom line
Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
Shiitake supplement might appeal to someone looking for immune or general wellness support, but the evidence for specific conditions is thin or absent. The real caution is if you take immunosuppressants or drugs processed through the CYP2D6 enzyme — those need a conversation with your doctor or pharmacist first.
If you're pregnant, nursing, or have handled shiitake before and noticed allergic symptoms, check with your healthcare provider before starting.
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 Sep 25, 2020.
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, straight from the product label.
| Brand | Herbal Terra |
|---|---|
| Barcode (UPC) | 0606595846469 |
| Net contents | 4 Fluid Ounce(s); 120 mL |
| Market status | On market |
| Date entered into DSLD | Sep 25, 2020 |
| DSLD ID | 235302 |
| 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 by Herbal Terra, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| certified organic Shiitake (Lentinula edodes) dried mushroom liquid extract | 970 mg | -- |
Other ingredients: Menstruum
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.
Suggested/Recommended/Usage/Directions
Direction Shake well before use. Adults take up to 30 drops (1 mL, one full squeeze of the dropper bulb) in 3-4 fl. oz of juice or water up to 4 times a day. We recommend to seek expert medical advice before taking this or any other herbal supplements.
FDA Disclaimer Statement
Notice This product has not been evaluated by the FDA and is not intended to diagnose, treat, cure, or prevent any disease.
Formulation
Manufactured in the USA in an FDA registered facility
Alcohol free
Dried herb/menstruum ratio: 1:3 Expertly extracted Laboratory tested 330 mg/1 mL Premium product Alcohol-free liquid herbal extract
Non GMO
No artificial ingredients, GMO, gluten, color additives, fillers, preservatives or binders. Natural Gluten Free
Precautions
Caution May have contraindications.
Do not use if you are allergic to any ingredients.
Consult a physician before using during pregnancy, if nursing, or if you are on any medications.
Keep out of the reach of children.
Storage
Store in a cool, dry, dark place.
Formula
Lentinula edodes
FDA Statement of Identity
Herbal Supplement
Seals/Symbols
Made in USA Made in an FDA registered facility Natural Gluten Free
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Shiitake by Herbal Terra 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 by Herbal Terra
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size1 mL Dosage formLiquid Servings per container120 Amounts shown are per serving.
Certified organic Shiitake (Lentinula edodes) dried mushroom liquid extract
Interacts with312 drugs
Shiitake is a popular edible mushroom that is nutritious and safe to eat as food for most people. Some of its extracts (like lentinan and AHCC) have b...
Certified organic Shiitake (Lentinula edodes) dried mushroom liquid extract monograph & interactionsOther (inactive) ingredients: Menstruum. These complete the product’s ingredient list but are not active constituents.
Shiitake by Herbal Terra Drug Interactions
HelloPharmacist Interaction Report
Herbal Terra's Shiitake liquid extract has documented interactions with two categories of medications.
Through its shiitake mushroom content, the most serious concern is with immunosuppressants — drugs that deliberately quiet your immune system after transplants or for certain autoimmune conditions. Shiitake may theoretically decrease how well these medications work, since in vitro evidence suggests the extract stimulates immune function.
Read the full breakdown — every affected drug type, severity by severity
The second interaction involves CYP2D6 substrates — a moderately large group of drugs your liver processes through a specific enzyme. In vitro studies hint that shiitake extract might speed up this enzyme, potentially lowering blood levels of affected medications and making them less effective.
This effect hasn't been observed in humans yet, but it's worth knowing about.
Before you start this product, check your exact medications with the tool on this page. If you take an immunosuppressant or any drug metabolized by CYP2D6, run it through first and talk with your doctor or pharmacist before adding shiitake.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Shiitake?
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 interact with 312 drugs. Click any drug to see the details.
1 of the 1 ingredient in Shiitake interact with drugs. Each result below shows which ingredient is responsible. certified organic Shiitake (Lentinula edodes) dried mushroom liquid extract
6-mercaptopurinePurinethol
How 6-mercaptopurine interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, taking shiitake mushroom might decrease the effects of immunosuppressive therapy.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + 6-mercaptopurine interactionAbrocitinibCibinqo
How Abrocitinib interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, taking shiitake mushroom might decrease the effects of immunosuppressive therapy.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Abrocitinib interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, Butalbital, CodeineBancap w/ Codeine
How Acetaminophen, Butalbital, Codeine interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Butalbital, Codeine interactionAcetaminophen, Butalbital, Codeine PhosphatePhrenilin #3
How Acetaminophen, Butalbital, Codeine Phosphate interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Butalbital, Codeine Phosphate interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid 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 — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Caffeine, Codeine interactionAcetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3
How Acetaminophen, Caffeine, Codeine, Salicylamide interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAcetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS
How Acetaminophen, Caffeine, Dihydrocodeine interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Caffeine, Dihydrocodeine interactionAcetaminophen, Chlorpheniramine Maleate, Dextromethorphan HbrVicks Formula 44M Cough, Cold & Flu Relief
How Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAcetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex
How Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAcetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid 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 — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Chlorzoxazone, CodeineAcetazone Forte C8, Parafon Forte C8
How Acetaminophen, Chlorzoxazone, Codeine interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Chlorzoxazone, Codeine interactionAcetaminophen, CodeineTylenol No.3, Tylenol w/ Codeine
How Acetaminophen, Codeine interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Codeine interactionAcetaminophen, Codeine, DoxylamineMersyndol
How Acetaminophen, Codeine, Doxylamine interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Codeine, Doxylamine interactionAcetaminophen, Codeine, MethocarbamolAcetaminophen, Codeine, Methocarbamol, Robaxacet 8
How Acetaminophen, Codeine, Methocarbamol interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Codeine, Methocarbamol interactionAcetaminophen, DextromethorphanTylenol Cough Ex Strength
How Acetaminophen, Dextromethorphan interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Dextromethorphan interactionAcetaminophen, Dextromethorphan, Doxylamine, PseudoephedrineVicks NyQuil
How Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylephrineConar-A
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylpropanolamineAnatuss
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PseudoephedrineRobitussin Cold, Severe Cold, Suphedrine Cold/Cough
How Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Phenylpropanolamine, PyrilamineTheracaps
How Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid 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 — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, HydrocodoneAnexsia, Anodynos DHC, Azdone, Co-Gesic, Doucet, Lorcet +9 more
How Acetaminophen, Hydrocodone interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Hydrocodone interactionAcetaminophen, MeperidineDemerol APAP
How Acetaminophen, Meperidine interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Meperidine interactionAcetaminophen, OxycodonePercocet, Roxicet, Tylox, Xartemis XR
How Acetaminophen, Oxycodone interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Oxycodone interactionAcetaminophen, PropoxypheneDarvocet-N 100, Darvocet-N 50, E-Lor, Wygesic
How Acetaminophen, Propoxyphene interacts with Shiitake — through 1 ingredient. Tap an ingredient for the detail:
Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid ExtractCytochrome P450 2d6 (cyp2d6) Substrates Moderate
Interaction Summary
Theoretically, shiitake mushroom might decrease levels of drugs metabolized by CYP2D6.
Read the full Certified Organic Shiitake (lentinula Edodes) Dried Mushroom Liquid Extract + Acetaminophen, Propoxyphene interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Shiitake 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.
certified organic Shiitake (Lentinula edodes) dried mushroom liquid 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, from the product label.
Shiitake by Herbal Terra: Common Questions
Does Shiitake by Herbal Terra interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Can I take Shiitake if I'm pregnant or breastfeeding?
What are the most common side effects?
Does shiitake actually work for cancer or chemotherapy side effects?
Is raw shiitake safe to eat?
Can I get an allergic reaction to shiitake?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Shiitake 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’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Shiitake'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
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- Sumiyoshi, Y., Hashine, K., Kakehi, Y., Yoshimura, K., Satou, T., Kuruma, H., Namiki, S., and Shinohara, N. Dietary administration of mushroom mycelium extracts in patients with early stage prostate cancers managed expectantly: a phase II study. Jpn.J Cl PubMed
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- Roman, B. E., Beli, E., Duriancik, D. M., and Gardner, E. M. Short-term supplementation with active hexose correlated compound improves the antibody response to influenza B vaccine. Nutr Res. 2013;33(1):12-17. PubMed
- Uno, K., Kosuna, K., Sun, B., Fujii, H., Wakame, K., Chikumaru, S., Hosokawa, G., and Ueda, Y. Active Hexose Correlated Compound (AHCC) Improves Immunological Parameters and Performance Status of Patients with Solid Tumors. Biotherapy 2000;14(3):303-309.
- Ghoneum, M., Wimbley, M., Salem, F., McKlain, A., Attallah, N., and Gill, G. Immunomodulatory and anticancer effects of active hexose correlated compound (AHCC). Int J Immunother 1995;11:23-28.
- Thaiudom, S., Piyaniran, W., and Chutaputthi, A. A study of the efficacy of Active Hexose Correlated Compound (AHCC) in the treatment of chronic Hepatitis C patients at Phramongkutklao Hospital. The Medical News (Thailand) 2010;325:13-16.
- Smith, J. A., Hunter, R. J., Fujii, H., Wakame, K., and Wolf, J. Defining Synergistic Activity ofthe Combination of Active Hexose Correlated Compound (AHCC) with Liposomal Doxorubicin (Doxil). Presented at the 18th International Congress on Nutrition and
- Sia, G. M. and Candlish, J. K. Effects of shiitake (Lentinus edodes) extract on human neutrophils and the U937 monocytic cell line. Phytother.Res. 1999;13(2):133-137. DOI
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- Lippert, U., Martin, V., Schwertfeger, C., Junghans, V., Ellinghaus, B., and Fuchs, T. Shiitake dermatitis. Br.J Dermatol. 2003;148(1):178-179.
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- Sastre, J., Ibanez, M. D., Lopez, M., and Lehrer, S. B. Respiratory and immunological reactions among Shiitake (Lentinus edodes) mushroom workers. Clin.Exp.Allergy 1990;20(1):13-19.
- Liu, M., Li, J., Kong, F., Lin, J., and Gao, Y. Induction of immunomodulating cytokines by a new polysaccharide-peptide complex from culture mycelia of Lentinus edodes. Immunopharmacology 1998;40(3):187-198. PubMed
- Ade R, Sukut C, Wiser HJ, Shockman S, Buescher L. Shiitake dermatitis demonstrating Köebner phenomenon. Int J Dermatol. 2015;54(5):e179-81.
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- Baran W, Batycka-Baran A, Maj J, Szepietowski JC. Shiitake dermatitis - now also in Poland. Acta Derm Venereol. 2015 Jan;95(1):102-3. PubMed
- Boels D, Landreau A, Bruneau C, et al. Shiitake dermatitis recorded by French Poison Control Centers - new case series with clinical observations. Clin Toxicol (Phila). 2014 Jul;52(6):625-8. PubMed
- Chu EY, Anand D, Dawn A, Elenitsas R, Adler DJ. Shiitake dermatitis: a report of 3 cases and review of the literature. Cutis. 2013 Jun;91(6):287-90.
- Corazza M, Zauli S, Ricci M, et al. Shiitake dermatitis: toxic or allergic reaction? J Eur Acad Dermatol Venereol. 2015 Jul;29(7):1449-51. PubMed
- Czarnecka AB, Kreft B, Marsch WCh. Flagellate dermatitis after consumption of Shiitake mushrooms. Postepy Dermatol Alergol. 2014 Jun;31(3):187-90. PubMed
- Dai X, Stanilka JM, Rowe CA, et al. Consuming Lentinula edodes (Shiitake) Mushrooms Daily Improves Human Immunity: A Randomized Dietary Intervention in Healthy Young Adults. J Am Coll Nutr. 2015;34(6):478-87.
- Hamer SE, Kulkarni K, Cohen SN. Shiitake dermatitis with oral ulceration and pustules. Clin Exp Dermatol. 2015 Apr;40(3):332-3. PubMed
- Hiernickel C, Metz S, Elsner P. Shiitake dermatitis: an impressive case report. J Dtsch Dermatol Ges. 2015 May;13(5):455-6. PubMed
- Karanovic S, George S, Topham E. Don't miss shiitake dermatitis: a case report. Br J Gen Pract. 2014 Aug;64(625):426-7. PubMed
- Kopp T, Mastan P, Mothes N, Tzaneva S, Stingl G, Tanew A. Systemic allergic contact dermatitis due to consumption of raw shiitake mushroom. Clin Exp Dermatol. 2009 Dec;34(8):e910-3. PubMed
- Lingström P, Zaura E, Hassan H, et al. The anticaries effect of a food extract (shiitake) in a short-term clinical study. J Biomed Biotechnol. 2012;2012:217164. PubMed
- Loo HV, Oon HH. Flagellate dermatitis following consumption of shiitake mushroom. Dermatol Reports. 2011 Oct 5;3(2):e21. PubMed
- Luber AJ, Ackerman LS. Flagellate shiitake mushroom dermatitis. Dermatol Online J. 2015 Aug 15;21(8). pii: 13030/qt7rm57553. DOI
- Mendonça CN, Silva PM, Avelleira JC, Nishimori FS, Cassia Fde F. Shiitake dermatitis. An Bras Dermatol. 2015 Mar-Apr;90(2):276-8.
- Netchiporouk E, Pehr K, Ben-Shoshan M, Billick RC, Sasseville D, Singer M. Pustular flagellate dermatitis after consumption of shiitake mushrooms. JAAD Case Rep. 2015 May 2;1(3):117-9. PubMed
- Nguyen AH, Gonzaga MI, Lim VM, Adler MJ, Mitkov MV, Cappel MA. Clinical features of shiitake dermatitis: a systematic review. Int J Dermatol. 2017 Jun;56(6):610-616. PubMed
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- Pravettoni V, Primavesi L, Piantanida M. Shiitake mushroom (Lentinus edodes): a poorly known allergen in Western countries responsible for severe work-related asthma. Int J Occup Med Environ Health. 2014 Oct;27(5):871-4. PubMed
- Ricar J, Pizinger K, Cetkovska P. Shiitake dermatitis: a distinctive clinical entity. Int J Dermatol. 2013 Dec;52(12):1620-1. PubMed
- Shozushima M, Ohata K, Nonaka K, Matsuhashi N. Shiitake mushroom-induced ileus managed using double-balloon enteroscopy. Endoscopy. 2013;45 Suppl 2 UCTN:E437. PubMed
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- Wang AS, Barr KL, Jagdeo J. Shiitake mushroom-induced flagellate erythema: A striking case and review of the literature. Dermatol Online J. 2013 Apr 15;19(4):5. DOI
- Tan J, Yuan K, Zuo J, et al. Two cases of small bowel obstruction due to a shiitake mushroom. Gastroenterol Rep (Oxf) 2019;7(4):298-300. doi: 10.1093/gastro/gox028. PubMed
- Boels D, Greillet C, Langrand J, et al. Shiitake dermatitis: experience of the Poison Control Centre Network in France from 2014 to 2019. Clin Toxicol (Phila) 2022. PubMed
- Miyagishima D, Inoue M, Kinjo K, et al. A case of bowel obstruction due to shiitake mushrooms: Diagnostic features on computed tomography. Intern Med 2022. PubMed
- Soga K, Mukai H, Kitae H. Management of shiitake mushroom-induced ileus using balloon enteroscopy. Dig Endosc 2022;34(4):e58-e59. PubMed
- Ma JY, Liu JW. Shiitake flagellate dermatitis. Mayo Clin Proc 2022;97(12):2192-2193. PubMed
- Booms A, Rashid Z, Al-Rubaie V, Bal A. Shiitake dermatitis: a case report of a rare mushroom-induced dermatitis in the United States. Int J Dermatol 2022. PubMed
- Sudy E, Urbina F. Shiitake dermatitis: clinical forms of presentation. Int J Dermatol 2023. PubMed
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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.
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