Reishi is a popular evening supplement, but no one can honestly promise it will help you sleep. The sleep findings people quote most come from rats and mice, and the human research is mixed and depends on the preparation, the dose and what was measured. If you want to try it, read the label closely and ask a clinician first if you take medicine or have a health condition.
Disclosure: this site and Pilly Labs are under common ownership.
Does reishi actually help you sleep?
Reishi (Ganoderma lucidum) is a glossy mushroom used for centuries in traditional East Asian practice. Today it is sold as powders, capsules, tinctures and gummies, usually with a calm or wind-down angle.
Here is what the research looks like:
- Animal studies: The sleep results you see quoted come mostly from animals. Eversio Wellness, a mushroom seller, cites studies in rats and mice. In those studies reishi extract lengthened sleep time, and the effects were linked to GABA and gut-bacteria pathways. Animal results do not tell you what a supplement will do in your bedroom.
- Human studies: Two clinical reviews of reishi in people (PubMed 36734035 and PubMed 25686270) describe results that are mixed and specific to the condition studied. The preparations, doses and outcomes differ a lot from study to study, so broad over-the-counter results are not established.
- The human trial people cite: Seller articles often point to a four-week placebo-controlled trial in breast cancer survivors with fatigue. It measured fatigue and quality of life, not sleep, in a very specific group.
Many seller pages also say reishi is an "adaptogen" that regulates cortisol and deepens sleep. Treat that as marketing language rather than settled science. Independent reviews do not show it as an established sleep aid. More on telling evidence from marketing: Ingredient Evidence vs. Marketing Claims.
How much reishi should you take for sleep?
There is no established sleep dose. Doses vary because products differ: dried mushroom, 10:1 or 20:1 extract, powder, tincture and gummy are not interchangeable. The table shows what sellers say, so you can see how wide the range is.
| Who says it | What they say | What to keep in mind |
|---|---|---|
| Nature Lion (seller) | Most reishi research uses 1 to 3 grams of extract per day. Start lower and build up over 2 to 4 weeks. Its tincture is 1 to 2 dropperfuls in the evening. | A seller’s summary, not a medical recommendation. Extract strength varies. |
| Eversio Wellness (seller) | Do not take more than 15,000 mg of dried fruiting body a day. Many people do well on about half that. Follow your product’s label. | This is about dried mushroom, not concentrated extract. |
| Pilly Labs Reishi Relax Gummies | 1 to 2 gummies, about 30 to 60 minutes before winding down. | A multi-ingredient gummy, so it is not comparable to reishi-only products. See the label section below. |
| Pilly Labs Reishi Calm Drops | One 1 mL dropper per serving, listing 150 mg reishi extract plus a 50 mg five-mushroom complex. | Individual amounts inside the complex are not disclosed. |
Product directions and total exposure matter, especially if you are considering more than one mushroom product. A healthcare provider can help you add them up.
Should you take reishi in the morning or at night? Is it okay before bed?
Evening is the usual choice. Nature Lion suggests 30 to 60 minutes before bed, and Eversio suggests about an hour before bedtime. Lifecykel, another seller, says timing is flexible and consistency matters more than the clock. SKINES says reishi is not sedating at typical doses and can be taken in the morning without drowsiness.
Taking reishi before bed is a common habit, and the pages above treat it as ordinary. Two things to keep in mind:
- A reishi-only product and a blend are different. Pilly’s Reishi Relax Gummies also list valerian root and passionflower, and Pilly’s page warns they may cause drowsiness. Do not drive or operate machinery if you feel drowsy.
- If you take a sedative or anti-anxiety medicine, ask your clinician or pharmacist before adding anything calming at night.
Reishi can be taken with or without food, according to Lifecykel. Follow your product’s directions.
How long does reishi take to kick in?
No one can give you a reliable timeline. Sellers describe reishi as gradual rather than a night-one effect. Lifecykel says benefits can often be felt within two weeks, and SKINES says two to four weeks. Those are seller statements, not trial results. Individual experiences vary, and no outcome or timeline is guaranteed.
If you try it, give it a fair test. Keep your bedtime and wake time steady and jot down how you sleep for a few weeks. This evening routine observation log can help. Keeping the rest of your routine steady makes it easier to judge whether the supplement changed anything. For more, see Why Sleep Consistency Matters.
What are the downsides of reishi?
| Downside | What to know |
|---|---|
| Uncertain benefit | Human sleep evidence is mixed. You may spend money and notice nothing. |
| Mild stomach upset | SKINES says some people new to mushroom extracts report digestive discomfort and suggests starting with a smaller amount. |
| Drowsiness from blends | Valerian and passionflower, found in some calming blends, can cause drowsiness. NCCIH’s valerian page describes the sleep evidence as insufficient or inconsistent, with limited long-term safety information. NCCIH’s passionflower page describes research as small and inconclusive. |
| Blood-thinning and blood pressure effects | Pilly Labs says reishi may have mild anticoagulant properties and could add to the effect of blood pressure medicines. |
| Allergy | People with mushroom or mold allergies should not use these products without medical guidance, according to Pilly Labs. |
| Added sugar in gummies | Pilly’s records list 2 g added sugar per Reishi Relax gummy. Drops and capsules are options if you want to avoid it. |
| Quality varies | Sellers such as Eversio and SKINES say to look for fruiting-body extract and for grain listed in the other ingredients. Mycelium grown on grain can mean less of the compounds used in research. |
If you have a bad reaction, stop and talk to your clinician. You can also report it to the FDA at the HHS safety reporting site. For a general checklist, see Sleep Product Safety: A Plain-English Checklist.
What should you not mix with reishi?
Pilly Labs lists these as medicines that need a clinician’s input before you use mushroom supplements. It says the list is not exhaustive.
| If you take or have | Why it matters, per Pilly Labs |
|---|---|
| Blood thinners (warfarin, heparin, aspirin) | Reishi, chaga and cordyceps may have mild anticoagulant properties. |
| Blood sugar medicines (metformin, insulin) | Several mushroom species may affect blood glucose. |
| Blood pressure medicines | Reishi may lower blood pressure and add to these drugs. |
| Immunosuppressants, or an organ transplant | Mushroom beta-glucans may stimulate immune function and work against these medicines. |
| Anti-anxiety or sedative medicines (such as benzodiazepines) | Reishi and other calming mushrooms may enhance sedative effects. |
| Chemotherapy or radiation | Some mushroom compounds may interact with cancer treatment. Ask your oncologist. |
| Medicines processed by the liver | Some compounds may affect liver enzymes and change how drugs are processed. |
Also be careful with alcohol, other sleep aids and other calming herbs. Valerian is the one to watch: NCCIH’s review lists sedatives and alcohol among the things to check. Stop at least two weeks before surgery, as Pilly Labs advises, unless your surgical team tells you otherwise.
Can you take reishi and magnesium together?
The sources here do not name magnesium as an interaction, but that does not make it a confirmed all-clear. If you take magnesium on top of medicines for blood pressure, sleep or anxiety, ask your pharmacist to check the full list.
Does reishi raise estrogen?
There is no established answer, so be wary of any page that gives you a flat yes or no. If you have a hormone-sensitive condition or take hormonal medicine, ask your clinician before using reishi.
Does reishi remove belly fat?
No. Nothing in the reishi research summarized here supports it as a fat-loss tool. Poor sleep and high stress can affect appetite and habits, so working on your sleep routine may help indirectly, but that is not a reishi effect. Our simple weekly routine for sleep, walking and strength is a better place to start.
What should you look for on a reishi label?
- The form: Is it fruiting-body extract, and is there an extract ratio?
- The amount of reishi: Is it listed on its own, or buried in a blend?
- Co-ingredients: Sedating herbs change the safety picture.
- Sugar and sweeteners: Gummies carry added sugar, while drops use stevia.
- The serving size: Does it match the directions on the bottle and the web page?
If you want an example label to compare, Pilly Labs Reishi Relax Gummies is a reishi gummy with added botanicals. The front label says "Promotes calm and balance*" and it comes as 30 gummies. The product page says valerian root and passionflower are included. Pilly’s formula summary lists 200 mg reishi, plus 25 mg each of L-theanine, lemon balm, passionflower and valerian, with 2 g added sugar.
Pilly’s own pages disagree in two places. The product page says exact serving size and amounts are still being reverified and directs you to 1 to 2 gummies, while the formula summary lists a one-gummy serving. Trust the bottle you receive over either.
Ingredient research does not show what a finished gummy will do. Reishi studies use different preparations and doses, and the other herbs have their own mixed evidence. The statements on the label have not been evaluated by the FDA, and the product is not intended to diagnose, treat, cure or prevent any disease. For a liquid format, see our Reishi Calm Drops label guide, which compares tincture and gummy formats and explains what is and is not disclosed.
Price, shipping and returns
The Reishi Relax Gummies page showed $47.99 per bottle as of October 1, 2026; check checkout for today’s price. U.S. shipping is $6.90, or free at $99. Pilly Labs says you can contact it within 30 days of delivery for review, with opened or unopened products eligible. Refunds are limited to one per product per customer. Email info@pillylabs.com with your order number.
Who should ask a clinician first?
- Anyone who is pregnant or nursing, or under 18.
- Anyone taking blood thinners, blood sugar, blood pressure, sedative or immune-suppressing medicines.
- Anyone with an autoimmune condition, a bleeding disorder or a mushroom or mold allergy.
- Anyone with surgery coming up.
For habits that move the needle on sleep, see Sleep Hygiene and Supplements and Stress and Sleep: How Worry Disrupts Rest.
Before you order
- Read the bottle, not just the web page, for serving size, reishi amount and other ingredients.
- Ask support whether the reishi amount is listed on its own or inside a blend.
- Ask your pharmacist about your medicines, magnesium and any other supplements you take.
- If you decide to use it, follow the bottle’s directions and track your sleep for a few weeks.
- Keep your order confirmation in case you want to use the 30-day review window.
By MakeTimeForWellness.com Wellness Team
This article is for general information purposes only and does not constitute medical advice. Consult your doctor or qualified healthcare provider before making changes to your health routine.