Best Mushroom for Sleep? Reishi vs Lion’s Mane, Safety & Doses

No mushroom has been proven to improve sleep in people. Reishi is often used for evening calm, and the human research on it is mixed. Lion's mane is a daytime, focus-oriented mushroom, and the small human studies on it look at thinking and mood, not sleep. Below is what has been studied, at what doses, what to watch for, and who should talk to a clinician first.

Disclosure: this site and Pilly Labs are under common ownership.

Which mushroom helps you sleep?

Reishi (Ganoderma lucidum) is the traditional answer. Evergreen, an Irish health-food retailer, notes that it has been used in East Asian herbal tradition for thousands of years and is now sold as capsules, powders, teas and liquid extracts. Retail pages often say it deepens sleep or balances stress hormones. The clinical reviews describe something more modest: one clinical review and another find human evidence that is mixed and specific to the condition studied. Preparations, doses and outcomes differ so much that no broad retail benefit has been established, and there is no established sleep dose.

Reishi can also cut the other way. Memorial Sloan Kettering, as cited by the supplement brand Vita Globe, lists insomnia among reishi's reported side effects, along with nausea, dry mouth and dizziness.

If sleep is your goal, reishi is the mushroom with a traditional evening role. Cordyceps is commonly sold for energy and exercise rather than sleep. For the traditional background, see our guide to reishi.

Does lion's mane work for sleep?

There is no human research showing that it does. The most-cited lion's mane trial, a 2009 study in people with mild cognitive impairment, had participants take tablets three times a day for 16 weeks, and the benefit faded after they stopped, according to Vita Globe's summary. A small 2025 study gave 18 healthy adults a single 3 g dose of a 10:1 fruiting body extract. It found no significant overall effect on cognition or mood, with one isolated task signal (PubMed record).

Consumer Reports says early research links lion's mane to better brain health and fewer depression symptoms, and that animal studies point to other benefits. It adds that human research is limited and more study is needed. None of this tells you whether lion's mane will help you fall asleep.

Which mushroom is most relaxing, and is reishi or lion's mane better?

They are used for different jobs. Reishi is the one traditionally taken to unwind. Lion's mane is the one people take for focus, and many take it in the morning. For sleep, reishi is the more logical candidate, but “more logical” is not “proven.” Neither has a human trial that shows a sleep benefit you can count on. Vita Globe notes that no study has compared morning with evening dosing for any functional mushroom. It suggests that if a reishi-containing product seems to disturb your sleep, you can try taking it earlier in the day.

What doses have been studied?

• Lion's mane: 3 g of a 10:1 fruiting body extract as a single dose in 18 adults (2025); tablets three times a day for 16 weeks (2009). Both measured thinking rather than sleep; the 2025 study also measured mood.
• Reishi: studies used different preparations, doses and outcomes, so there is no standard dose to compare a product against.
• L-theanine, valerian, passionflower, lemon balm: these are often added to sleep-style gummies. Studies of them used preparations and doses that can differ a great deal from the small amounts in a multi-ingredient gummy.

This matters when you read a label. A small amount of one ingredient in a blend is not the same thing as the amount in a study. Research on an ingredient is never proof that a finished product works.

What is the downside of lion's mane?

• Bleeding. Consumer Reports cites two small studies, one in rodents and one in a lab dish, suggesting lion's mane may thin the blood. A practitioner it quotes tells patients to stop lion's mane at least two weeks before surgery. Pilly Labs' safety notice gives the same two-week window for any of its supplements.
• Allergy. If you have a mushroom or mold allergy, talk to a clinician before using any mushroom product.
• Stomach upset. Nausea and an upset stomach have been reported with some mushrooms, according to Vita Globe.
• Limited human data. Most of the promising results come from animals or very small trials.
• Quality. Consumer Reports suggests buying from the manufacturer rather than a third-party seller and looking for a legitimate third-party seal such as USP.

Why do I feel weird after taking lion's mane?

No study explains it, so the honest answer is that responses vary. Common things to look at are an allergy or sensitivity, stomach upset, and whatever else was in the product. A coffee blend carries caffeine, and the FDA notes that caffeine sensitivity varies from person to person (FDA on caffeine). A gummy may carry several botanicals and sweeteners, and a stack of supplements adds more variables. Pilly Labs' safety notice says to stop use and talk to your healthcare provider if you have an adverse reaction. You can also report it to the FDA at safetyreporting.hhs.gov or 1-800-FDA-1088. Feeling unwell is a good reason to call a clinician, and a clinician is the right person to sort out the cause.

What should you not mix with lion's mane or reishi?

Pilly Labs' own interaction notice lists the medicine groups where mushroom supplements may matter. Talk to your prescriber or pharmacist if you take any of these:

• Blood thinners or antiplatelet drugs. The notice says reishi, chaga and cordyceps may have mild anticoagulant properties, and Consumer Reports raises the same question for lion's mane. Vita Globe cites a report that maitake raised INR with warfarin.
• Blood-sugar medicines. Several mushroom species may affect blood glucose.
• Blood-pressure medicines. Reishi may lower blood pressure.
• Sedatives or anti-anxiety medicines. Reishi and other calming ingredients may add to sedation.
• Immunosuppressants, transplant medicines, chemotherapy or radiation. Beta-glucans may stimulate immune activity, and some mushroom compounds may interact with cancer treatment.
• Medicines processed by the liver. Some mushroom compounds may affect liver enzyme activity.

Alcohol and other sleepy-making herbs belong on your list too, because valerian and passionflower can cause drowsiness. The NIH advises telling all your healthcare providers about every supplement you use.

Is lion's mane like Adderall?

No. Lion's mane is a dietary supplement. Consumer Reports notes it is not used in conventional medicine and is not a replacement for conventional treatment. The human research is small and emerging, and the 2025 study above found no significant overall effect on cognition or mood. If you are asking because of attention or focus concerns, that is a conversation for your clinician. Do not swap a mushroom for a prescribed medicine on your own.

What is the healthiest mushroom for humans?

No study ranks them. As food, Consumer Reports says lion's mane is a good source of potassium, zinc, manganese and B vitamins such as thiamine, riboflavin and niacin. It adds that fresh mushrooms should be cooked to release their nutrients. EcoWatch describes mushrooms in general as low in calories and rich in B vitamins, potassium, copper and selenium. A dietary study of shiitake looked at immune markers, but that does not validate the small extract doses in capsules or gummies (shiitake study). If “healthiest” matters to you, cooked mushrooms in meals are the best-understood route.

What about sleep blends with other herbs added?

When a mushroom product is marketed for sleep, check what else is in it. RYZE, for example, says its mushroom hot cocoa contains reishi along with L-theanine, melatonin and glycine. Reishi shows up in products from RYZE, Four Sigmatic (a ten-mushroom blend) and Pilly Labs. If you want an example label to read, Pilly Labs' Reishi Relax Gummies pair reishi with valerian root and passionflower. Its page suggests 1–2 gummies about 30–60 minutes before winding down, says no outcome is promised, and was showing $47.99 before shipping as of October 1, 2026. Check the checkout for today's price. The page also says the exact amounts are being reverified. The company's formula summary lists 200 mg reishi and 25 mg each of L-theanine, lemon balm, passionflower and valerian, so read the bottle for the current numbers.

For the herbs themselves, see our pages on valerian root and passionflower.

Be wary of big promises

The FDA has sent warning letters to mushroom sellers whose sites claimed their products treat disease. One 2020 letter to Mushroom Revival cited claims about insomnia, cancer and infections (FDA warning letter). A supplement can describe how an ingredient is traditionally used. It should not promise to treat a sleep disorder or any other condition.

Who should ask a clinician first?

• Anyone who is pregnant or nursing.
• Anyone taking medicines from the list above, especially blood thinners, blood-sugar, blood-pressure, sedative or anti-anxiety drugs, immunosuppressants or chemotherapy.
• Anyone with an autoimmune condition, bleeding disorder, transplant, or mushroom or mold allergy.
• Anyone with a history of kidney stones, because chaga contains oxalates.
• Anyone with surgery scheduled.
• Anyone under 18. See our page on sleep supplement safety for young people.
• Anyone whose sleep trouble is persistent. A clinician can look at causes a supplement will not touch. Our pages on improving sleep naturally and sleep stages cover habits that help.

Before you order

• Ask the seller for the current Supplement Facts panel and check whether any blend hides per-species amounts. Pilly Labs' 10-mushroom gummy lists ten species in a 250 mg combined blend and does not disclose each amount.
• Check whether the product contains sedating herbs such as valerian or passionflower if you drive or take other sedating products.
• Check for caffeine if you are looking at mushroom coffee.
• Look for a third-party seal such as USP and buy from the maker's site.
• Know the return terms. Pilly Labs says you can contact info@pillylabs.com within 30 days of delivery, opened or unopened, with one refund per product per customer.
• Take the full ingredient list to your pharmacist if you use any medicine.

By MountainSageNaturalHealth.com Editorial Team