Interactions on record — worth a quick check against your medications. Based on 1 of 2 ingredients. Check your meds →
Dietary supplement

Lion's Mane Extract Ingredients & Drug Interactions

by Host Defense Mushrooms

Lion's Mane Extract label
See full label image
Liquid Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 30, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Lion's Mane 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

The interaction bottom line Most serious interaction: Moderate

Lion's Mane Extract is a dietary supplement by Host Defense Mushrooms with 2 active ingredients. Its ingredients are commonly taken for memory and cognitive support, nerve health, mood and anxiety.Based on those ingredients, 327 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Lion's Mane Mycelium Extract, Fresh. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Lion's Mane Extract by Host Defense Mushrooms

Ask about any prescription or over-the-counter medication and we check it for interactions with Lion's Mane Extract by Host Defense Mushrooms — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Lion's Mane 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.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Oct 1, 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 2 active ingredients.
  • “Proprietary Blend” is a proprietary blend — the label gives one combined amount (1 mL) without saying how much of each component you get.

This liquid contains two active forms of lion's mane mushroom: the fresh mycelium extract and the dried fruiting body extract. Both are included in a base of water and alcohol.

There are no other active ingredients listed.

Does it work?

Couldn't assess
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 assessable

This is a single-ingredient Lion's Mane Mushroom product and its label doesn't state a use — see Lion's Mane Mushroom's own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

The data we hold doesn't establish reliable evidence for lion's mane in any of the areas it's typically used for — Alzheimer disease, anxiety, athletic performance, cancer, cognitive function, or cognitive impairment all show insufficient reliable evidence to rate. That doesn't mean it doesn't work; it means the research so far hasn't been strong enough to say.

The evidence, ingredient by ingredient Lion's Mane Mushroom

How safe is it?

Some data gaps
Safety Information · database check
Some gaps

Safety data exists for these ingredients, but with some important gaps.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 0 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.

Lion's mane is generally well tolerated when taken by mouth. The most common side effects reported are gastrointestinal discomfort, nausea, and skin rash — a small number of people in trials experienced these.

Long-term supplement safety hasn't been studied well, so caution is warranted with extended use. There isn't enough safety data to know whether it's okay during pregnancy or while breastfeeding.

Talk with your doctor or pharmacist for personalized advice if you're pregnant, planning to become pregnant, or nursing.

Side effects, ingredient by ingredient Lion's Mane 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 — Lion's Mane Mushroom.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; immunosuppressants / transplant drugs; diabetes medications.
  • For scale: 327 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 you start, check with your doctor or pharmacist if you take blood thinners or antiplatelet drugs (Moderate severity — increased bleeding risk), diabetes medications (Moderate — possible blood sugar drop), or immune-suppressing drugs (Moderate — may interfere with their effect).

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with no assessable stated purpose. Moderate medication interactions have been identified, and some safety-information gaps remain.

Lion's mane may be worth considering if you're interested in cognitive support, though the evidence isn't yet solid. If you take blood thinners, diabetes medications, or immune-suppressing drugs, you'll need to check with your doctor or pharmacist before adding this to your routine.

It's generally well tolerated, but pregnancy and breastfeeding aren't supported by current safety data.

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 Jul 25, 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 Lion's Mane Extract, straight from the product label.

Brand Host Defense Mushrooms
Net contents 1 Fluid Ounce(s); 30 mL
Market status On market
Date entered into DSLD Jul 25, 2024
DSLD ID 312396
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), 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 Lion's Mane Extract by Host Defense Mushrooms, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 mL
Maximum serving Sizes:
1 mL
Servings per container
30
IngredientAmount% DV
Proprietary Blend1 mL--
Lion's Mane Mycelium Extract, Fresh0 NP--
Lion's Mane Fruiting Body Extract, Dried0 NP--

Other ingredients: Water, Alcohol

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.
Suggested/Recommended/Usage/Directions

Directions: Take 1 full dropper bulb squeeze (1mL) twice per day.

Precautions

Caution: If you have a medical condition, are taking medications, or are pregnant or breastfeeding, consult a healthcare professional before using this product.

Keep out of reach of children.

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.

Formula

Superfood mushroom mycelium

Seals/Symbols

USDA Organic

Certified Organic Washington State Department of Agriculture Organic Program

Formulation

Non GMO GF Gluten free

USDA Organic Certified Organic Washington State Department of Agriculture Organic Program Certified Organic by the WSDA

Memory & nerve support

FDA Statement of Identity

Dietary Supplement

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

See for yourself

Lion's Mane Extract by Host Defense Mushrooms label

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

Lion's Mane Extract 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 Lion's Mane 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 container30 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. These complete the product’s ingredient list but are not active constituents.

Interaction report

Lion's Mane Extract by Host Defense Mushrooms Drug Interactions

Want to check YOUR meds against Lion's Mane 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 checker
327Drugs
327 Moderate

Ingredients driving the most interactions

Lion's Mane Mycelium Extract, Fresh 327

Individual Drug Interactions

The ingredients in Lion's Mane Extract interact with 327 drugs. Click any drug to see the details.

1 of the 2 ingredients in Lion's Mane Extract interact with drugs. Each result below shows which ingredient is responsible. Lion's Mane Mycelium Extract, Fresh

Each ingredient & the kinds of drugs it affects

For each ingredient in Lion's Mane 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.

Lion's Mane Mycelium Extract, Fresh3 drug types · 327 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, lion's mane mushroom may increase the risk of bleeding when used with anticoagulant/antiplatelet drugs.
In vitro research suggests that lion's mane mushroom extracts can inhibit platelet aggregation.

Likelihood Possible Evidence D
Antidiabetes Drugs

Theoretically, lion's mane mushroom may have additive effects when used with antidiabetes drugs.
Animal research suggests that an aqueous extract of lion's mane mushroom can reduce serum glucose and increase serum insulin.

Likelihood Possible Evidence D
Immunosuppressants

Theoretically, concurrent use of lion's mane mushroom might interfere with immunosuppressive therapy.
In animal and in vitro research, lion's mane mushroom polysaccharides stimulate the immune system.

Likelihood Possible Evidence D
Lion's Mane Mycelium Extract, Fresh full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Lion's Mane 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
Pharmacist Counseling Corner

Lion's Mane Extract by Host Defense Mushrooms: Common Questions

Does Lion's Mane Extract by Host Defense Mushrooms interact with any medications?
Yes. Based on its ingredients, Lion's Mane Extract has a known interaction with 327 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Lion's Mane Extract contains 2 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is 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 lion's mane mushroom supposed to do?
It's commonly used for cognitive support and brain health. The data we hold shows insufficient reliable evidence for Alzheimer disease, cognitive function, cognitive impairment, anxiety, athletic performance, and cancer — meaning research hasn't yet confirmed how well it works for these uses.
Can I take this while pregnant or breastfeeding?
The safety data advises against it. There isn't enough information to know whether it's safe, so talk with your doctor or pharmacist about what's right for your situation.
What are the side effects?
Lion's mane is generally well tolerated. The most common side effects are gastrointestinal discomfort, nausea, and skin rash — though most people don't experience these.
Why is long-term safety not well studied?
Lion's mane has a history as food, but as a supplement taken in concentrated doses over long periods, the research is still limited. The data we have doesn't flag major red flags, but extended use hasn't been thoroughly investigated yet.
Does this product have fillers or other inactive ingredients?
Yes. The inactive ingredients are water and alcohol, which serve as the liquid base for the extract.

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

Not sure if Lion's Mane Extract is safe with your meds?

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Lion's Mane Extract label
Go deeper

The Full Monographs Behind Lion's Mane Extract’s Ingredients

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

Herb & supplement monograph

Lion's Mane Mushroom

Interacts with 327 drugs

Lion's mane is an edible mushroom that is popular as a 'nootropic' for memory, focus, and nerve health, but solid human evidence is still limited and early. It is generally well tolerated as...

Read the full Lion's Mane Mushroom monograph →
Sources

Sources & How We Checked

Lion's Mane 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.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 6 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Lion's Mane Mushroom 6 references
  1. Product information for <em>Niaspan</em>. Abbott Laboratories. North Chicago, IL 60064. April 2015.
  2. Liang B, Guo Z, Xie F, Zhao A. Antihyperglycemic and antihyperlipidemic activities of aqueous extract of Hericium erinaceus in experimental diabetic rats. BMC Complement Altern Med. 2013;13:253. PubMed
  3. Mori K, Inatomi S, Ouchi K, Azumi Y, Tuchida T. Improving effects of the mushroom Yamabushitake (Hericium erinaceus) on mild cognitive impairment: a double-blind placebo-controlled clinical trial. Phytother Res. 2009;23(3):367-72.
  4. Mori K, Kikuchi H, Obara Y, et al. Inhibitory effect of hericenone B from Hericium erinaceus on collagen-induced platelet aggregation. Phytomedicine. 2010;17(14):1082-5. PubMed
  5. Li IC, Chang HH, Lin CH, et al. Prevention of early Alzheimer's disease by erinacine A-enriched Hericium erinaceus mycelia pilot double-blind placebo-controlled study. Front Aging Neurosci 2020 Jun 3;12:155. doi: 10.3389/fnagi.2020.00155. PubMed
  6. Tian B, Liu R, Xu T, et al. Modulating effects of Hericium erinaceus polysaccharides on the immune response by regulating gut microbiota in cyclophosphamide-treated mice. J Sci Food Agric 2023;103(6):3050-3064.

See these in context on the Lion's Mane 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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