Herb & supplement monograph

Lion's Mane Mushroom Drug Interactions, Uses, Effectiveness, Safety & More

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS ·Updated July 2026

What is this page for?

First and foremost: how Lion's Mane Mushroom interacts with medications. The heart of this page is the interaction list — every drug Lion's Mane Mushroom is known to interact with, and how serious each one is.

But these pages have grown well beyond that into a full monograph — what Lion's Mane Mushroom is, what people use it for and how strong the evidence is, its safety and side effects, and answers to the questions we’re asked most — written and reviewed by the clinical staff at HelloPharmacist. It’s educational information from our licensed clinical databases, not medical advice, and we don’t sell or endorse products. Our editorial policy

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Lion's Mane Mushroom Drug Interactions: The Bottom Line

From the HelloPharmacist Editorial Team · Updated July 2026

Based on the available evidence, the overall risk of a clinically significant Lion's Mane Mushroom drug interaction appears low for most people, though a few medication groups deserve extra care. None of the listed interactions are rated major, and every one is based on lab or animal research rather than confirmed effects in people.

Interactions deserving the most attention

The combinations that matter most involve medicines with a narrow margin for error. Lab studies suggest lion's mane may slow platelet clumping, so people taking anticoagulant or antiplatelet drugs could face a higher bleeding risk if that effect carries over to humans. Animal research shows it can lower blood sugar, which could add to the effect of diabetes medications. It may also stimulate the immune system, which could work against immunosuppressants, such as those used after a transplant.

What the rest of the list means

The long list of interacting medications largely reflects these few theoretical concerns applied across many drugs in each group. Because the evidence comes from lab and animal studies, not human trials, it is not clear these effects happen in people at all. A listed interaction signals a reason for awareness, not proof of harm.

Check your medications against Lion's Mane Mushroom

Based on HelloPharmacist’s Lion's Mane Mushroom interaction data and reviewed under our editorial standards.

Interaction report

Drugs that interact with Lion's Mane Mushroom

327 medications have a known interaction with Lion's Mane Mushroom, graded by severity. Select any drug for the full evidence-based detail.

Don’t want to scroll the list? Just ask.

Tell us the medications you take and we’ll check each one against Lion's Mane Mushroom using our pharmacist-reviewed interaction data.

AI summaries are generated from our Lion's Mane Mushroom interaction data for education only — always confirm with your pharmacist. How we use AI

2,830 drugs

Read The List Like a Pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
Each drug listed above links to the full report for that exact Lion's Mane Mushroom combination — clinical detail, likelihood, evidence level, and citations.
Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

The big picture

The kinds of drugs Lion's Mane Mushroom affects

Every type of medication (drug category) Lion's Mane Mushroom is known to interact with. Open any category for the detail — or search your exact drug in the checker above.

All 3 drug categories Lion's Mane Mushroom interacts with

Anticoagulant/antiplatelet DrugsAntidiabetes DrugsImmunosuppressants

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

Monograph

Lion's Mane Mushroom: Uses, Safety & Side Effects

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Reviewed July 2026 ·

The bottom line

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 a food and supplement, but talk with your pharmacist or doctor before starting it, especially if you are pregnant, breastfeeding, or have allergies.

Scientific name: Hericium erinaceus
Family: Hericiaceae
Part used: Fruiting body and mycelium
Common forms: Capsules, powders, tablets, tinctures, teas, and as a culinary mushroom

People commonly use it for

Memory and cognitive support
Nerve health
Mood and anxiety
Immune support
General wellness/antioxidant

Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.

Safety at a glance

OverallUse caution

Generally well tolerated as a food, but supplement safety has not been well studied long-term.

PregnancyBest avoided

Not enough safety data, so it is best to avoid during pregnancy.

BreastfeedingBest avoided

Not enough safety data, so it is best to avoid while breastfeeding.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Jump to a section

Overview

Lion's mane (Hericium erinaceus) is an edible mushroom named for its long, shaggy white spines that look like a lion's mane. It grows on dead or dying hardwood trees and is native to North America, Europe, and Asia.

People have eaten lion's mane as food for a long time, and it has also been used in traditional medicine in parts of Asia. Today it is sold widely as a dietary supplement, often marketed for brain health and focus. It comes in capsules, powders, teas, and tinctures, and is also cooked and eaten like other mushrooms.

How it works

Lion's mane contains compounds called hericenones and erinacines, along with beta-glucans and other antioxidants. In laboratory and animal studies, some of these compounds appear to encourage the body to make nerve growth factor (NGF), a protein that helps nerve cells grow and stay healthy.

Researchers think this is why lion's mane is studied for memory, nerve repair, and mood. The mushroom's beta-glucans may also affect the immune system. It is important to know that most of this work has been done in cells or animals, so we cannot be sure the same effects happen in people.

Effectiveness

Does Lion's Mane Mushroom work?

Here’s what the research actually shows for each use — graded by Natural Medicines and reviewed by Dr. Brian Staiger, PharmD.

Evidence overview · 18 uses evaluated

18 Insufficient evidence

How to read these evidence grades

Natural Medicines’ 7-point scale. We show each rating’s label word-for-word.

1EffectiveStrong, consistent evidence it works.

2Likely EffectiveGood evidence, though not yet conclusive.

3Possibly EffectiveSome evidence suggests a benefit.

4Possibly IneffectiveSome evidence it may not help.

5Likely IneffectiveFairly strong evidence it doesn’t help.

6IneffectiveStrong evidence it doesn’t work.

7Insufficient Reliable Evidence to RateToo little research to say either way.

For Lion's Mane Mushroom, current evidence isn’t strong enough to rate any specific use. The conditions it has been studied for are listed below.

Also studied for 18 conditions — evidence insufficient to rate

Insufficient Reliable Evidence To Rate Alzheimer disease