How Much Lion’s Mane Per Day? 1 to 3.2 g, by Form
Take 1 to 3.2 g of lion’s mane a day, the range most daily trials used. For an extract labeled “8:1” or “4:1,” take the label serving: no trial says how many grams of dried mushroom it equals.
By Erin Rose Updated October 8, 2026 How we score
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Prices are each brand’s own list price; other stores may differ. The 3 best lion’s mane supplements
How much, by form
Find the form named on your label. These amounts are for adults.
| Form | How much | Notes |
|---|---|---|
| Dried mushroom (fruiting body) | The range above | The 3 trials of dried fruiting body used the upper end of it, for 4 to 16 weeks (Nagano 2010; Mori 2009; Saitsu 2019). Capsules of dried powder: count them (below). More |
| Extract (8:1, 4:1, hot-water) | The label serving | No trial converts an extract to grams of dried mushroom. The 10 extracts we score give 450 to 1,500 mg a serving. More |
| Mycelium on grain | The label serving | Its grams include the rice or oats it grew on, so a gram is not a gram of mushroom. More |
| Gummies | The label serving | The 4 gummies we score give 175 to 1,000 mg a serving. |
| More than 3.2 g a day | No proven gain | No trial compared doses. 10 g a day for 4 weeks found no effect (Grozier 2022). More |
How many capsules that is
For capsules of dried powder, the grams are mushroom, so you can count capsules. One of them lists the fruiting body alone; the other 4 also hold mycelium. The trials used fruiting body only.
| Per capsule | For 3 g | Products |
|---|---|---|
| 700 mg | 5 capsules | 1 |
| 600 mg | 5 capsules | 2 |
| 500 mg | 6 capsules | 2 |
Where capsules do not divide evenly we round up. For an extract, don’t count capsules this way: take the label serving.
What doses the trials used
Most daily trials used the range above. No trial compared one dose with another, so no dose is proven best. In the best-known trial, people took four 250 mg tablets three times a day: about 3 g in all, for 16 weeks; the tablets were 96% mushroom powder (Mori 2009).
| Trial | A day | Form and length |
|---|---|---|
| Li 2020 | 1.05 g | Specially grown mycelium (erinacine A), 49 weeks |
| Vigna 2019 | 1.5 g | Mycelium plus fruiting-body extract, 8 weeks |
| Docherty 2023 | 1.8 g | Three 600 mg capsules, 28 days |
| Nagano 2010 | 2 g | Dried fruiting body in 4 cookies, 4 weeks |
| Mori 2009 | 3 g | Dried fruiting body (tablets; about 2.9 g of mushroom), 16 weeks |
| Saitsu 2019 | 3.2 g | Dried fruiting body, 12 weeks |
Not in the table: Grozier 2022 gave 10 g a day in muffins for 4 weeks and found no effect.
Every trial, with who took part
| Trial | Daily dose | Form and length |
|---|---|---|
| Mori 200930 adults aged 50 to 80 with mild memory problems; the first author works for a mushroom producer | 3 g a day | Dried fruiting body (tablets; about 2.9 g of mushroom), 16 weeks |
| Nagano 201030 women, average age 41 | 2 g a day | Dried fruiting body in 4 cookies, 4 weeks |
| Saitsu 2019Healthy adults over 50 | 3.2 g a day | Dried fruiting body, 12 weeks |
| Li 2020A small pilot in older adults with early memory loss; run by the mycelium’s maker | 1.05 g a day | Specially grown mycelium (erinacine A), 49 weeks |
| Vigna 201977 adults on a low-calorie diet | 1.5 g a day | Mycelium plus fruiting-body extract, 8 weeks |
| Docherty 202341 healthy adults aged 18 to 45 | 1.8 g a day | Three 600 mg capsules, 28 days |
| Grozier 202224 college-age adults | 10 g a day | In muffins, 4 weeks |
| Surendran 202518 healthy adults aged 18 to 35 | 3 g, once | 10:1 fruiting-body extract |
| La Monica 2023Healthy adults | 1 g, once | Nordic-grown lion’s mane |
In Nagano 2010 the 2 g came in four cookies of 0.5 g each; in Saitsu 2019, four supplements of 0.8 g made 3.2 g. Li 2020 used a mycelium grown to hold more of one compound (erinacine A); retail mycelium capsules do not say they are made this way.
Two label traps
The “equivalent to” number. Some extracts print the raw mushroom they came from as the big number on the bottle. 3 labels we score do this: “equivalent to 4,200 mg” on a serving that holds 1,050 mg of extract; “equivalent to 2,100 mg” on a serving that holds 525 mg of extract; “equivalent to 350 mg” on a serving that holds 175 mg of extract. Dose by the extract line, not the big number.
Mycelium on grain. 5 of the 24 products we score are mycelium grown on rice or oats. The label words say “biomass,” “myceliated oats” or “fermented rice.” How to read a lion’s mane label
When and how to take it
No trial compared times of day or taking it with and without food. The 16-week trial split the dose over three times a day (Mori 2009). If several capsules upset your stomach, splitting them is a reasonable choice. The daily trials ran 4 to 49 weeks, and in the 16-week trial scores fell again 4 weeks after people stopped.
Side effects and cautions
There is no upper limit and little safety data. If you take a blood thinner or any other medicine, or are pregnant, ask your doctor first. One published case report links a serious lung reaction to a lion’s mane extract (Nakatsugawa 2003). Side effects.
Questions
How many capsules is that?
It depends on the capsule. A 500 mg capsule of dried powder takes 6 capsules for 3 g. An extract capsule is not comparable gram for gram, so follow its label.
Can I take it every day?
The daily trials gave it every day for 4 to 49 weeks. No trial tested longer use, or taking breaks.
Can you take too much?
No upper limit is set, and no trial shows more works better. 10 g a day for 4 weeks found no effect in 24 young adults (Grozier 2022). One published case report links a serious lung reaction to a lion’s mane extract (Nakatsugawa 2003).
Sources
- Mori K et al. Phytother Res. 2009;23(3):367-72. PubMed 18844328
- Nagano M et al. Biomed Res. 2010;31(4):231-7. PubMed 20834180
- Saitsu Y et al. Biomed Res. 2019;40(4):125-131. PubMed 31413233
- Li IC et al. Front Aging Neurosci. 2020;12:155. PubMed 32581767
- Vigna L et al. Evid Based Complement Alternat Med. 2019;2019:7861297. PubMed 31118969
- Docherty S et al. Nutrients. 2023;15(22):4842. PubMed 38004235
- Grozier CD et al. Int J Exerc Sci. 2022;15(2):1366-1380. PubMed 36582308
- Surendran G et al. Front Nutr. 2025;12:1405796. PubMed 40276537
- La Monica MB et al. Nutrients. 2023;15(24):5018. PubMed 38140277
- Nakatsugawa M et al. Intern Med. 2003;42(12):1219-22. PubMed 14714963
- Labels: each brand’s page or the NIH Dietary Supplement Label Database, read October 6, 2026.
This page is for information. It is not medical advice.