Lion's mane and focus: what has been studied in healthy adults?
Short answer: It hasn’t been shown that lion's mane improves your focus or concentration. In healthy younger and middle-aged adults, we found three recent, small studies with 69 participants in total, and one of them found a faster score on one concentration test after a single dose. The other two found no clear effect on overall attention or cognition scores, so no firm conclusions can be drawn from them.
Last updated: October 30, 2026 · Written by Florian Fermin
Online, lion's mane is often called “the focus mushroom.” As a seller, unfortunately, we can’t say that, and honestly, I wouldn’t want to without good evidence either. So I’ve taken a look at the studies in healthy adults side by side, along with what they did and didn’t find.
What do studies say about lion's mane, focus, and concentration?
Lion's mane has been studied for attention and concentration in three recent, small studies involving healthy adults. The results are mixed: one study found a faster score on a concentration test, a second found an effect only on a dexterity test, and the third found no significant changes. That’s too little and too small to say that lion's mane improves focus or concentration.
Lion's mane is called “pruikzwam” in Dutch and Hericium erinaceus in Latin. It is an edible mushroom with white, hanging spines that grows on deciduous trees. As a supplement, you can find it as a powder, capsules, extract, or tincture.
Focus and concentration aren’t vague concepts in research. Researchers measure them with computer tasks, such as how quickly and accurately you respond when distracted. So a better score on one such task is different from being “better able to focus” in your daily life.
Why is lion's mane associated with the brain?
Lion's mane contains compounds called hericenones and erinacines. These have mainly been studied in the lab and in animals. That research doesn’t tell us anything about humans, but it does explain why lion's mane is so often associated with focus online.
There is a big step from cell culture to humans. What happens in a petri dish or in a mouse doesn’t always happen in a person taking a capsule. You can read more about this basic research in our article with research and facts about lion’s mane.
What studies on lion's mane and concentration have been conducted in healthy people?
Among healthy adults up to age 55, we found three studies measuring attention or concentration: a 2023 study with 41 participants, a 2025 study with 18 participants, and a 2026 pilot study with 10 participants. They used different products, amounts, and tests, so you can't simply combine their results.
| Study | Participants | What did they receive? | Duration | What was found? |
|---|---|---|---|---|
| Docherty et al., 2023 | 41 healthy adults, ages 18-45 | 1.8 g of lion's mane per day or placebo | Once (after 60 minutes) and 28 days | Faster on the Stroop task after one dose. After 28 days, only a non-significant trend in perceived stress. Other outcomes showed no effect or a negative effect. |
| Surendran et al., 2025 | 18 healthy adults, ages 18-35 | A single 3 g dose of fruiting body extract (10:1) or placebo | Once (after 90 minutes) | No significant effect on overall cognition and mood scores. However, scores improved on a pegboard dexterity test. |
| Evans et al., 2026 | 10 healthy adults, ages 18-55 | 2 g of organic lion's mane supplement per day | 4 weeks | No statistically significant changes in attention, inhibition, or BDNF in the blood. |
A placebo is a fake treatment that looks the same as the real product. This lets researchers see whether an effect really comes from lion's mane or from the participant's expectations.
What is the Stroop task?
The Stroop task is a well-known concentration test. You see color words, such as "red", printed in a different ink color, and you have to name the ink color as quickly as possible. This requires you to suppress your first impulse.
In the study by Docherty et al. (2023), participants were faster on this task than the placebo group 60 minutes after a single dose of lion's mane.
After 28 days of daily use, the researchers reported only a trend in perceived stress that fell just short of statistical significance. They describe their findings as preliminary because of the small group.
What do these studies not tell us about lion's mane and focus?
The three studies do not show that lion's mane improves your focus in everyday life. Together, they had only 69 participants, used different products, and mostly found no effect or isolated effects on a single test. They also say nothing about long-term use, children, or older people, in whom other studies mainly looked at cognitive tests.
- Small groups. With 10 to 41 participants, a difference found could also be due to chance, and a real small effect could be missed.
- Different products. 1.8 g of one product is different from 3 g of a 10:1 extract. So you can't simply apply the results to another supplement.
- Short duration. The longest study lasted 4 weeks. We know very little about use over months or years.
- Individual outcomes. If you run lots of tests, one of them will always score better at some point. The overall scores showed no clear pattern.
Read more about what has been studied regarding lion's mane and concentration in lion's mane and focus: what does research say?. If you're concerned about your concentration, discuss it with your doctor.
Should you take lion's mane every day or only when you need to concentrate?
There is no evidence-based answer to that. The situations studied involved a single dose, 28 days of daily use, and 4 weeks of daily use, and none of these study designs showed a clear and lasting effect on attention. So if you use lion's mane, choose when to take it based on your routine, not on evidence.
"Every day or only when you need it?" is a question we really do get through chat. I'd simply choose what fits into your day and stick to the daily dose on the packaging. You can read about how much to take for each form in how much lion's mane per day.
Why can't a brand say that lion's mane improves your focus?
In the EU, a food supplement may only carry a health claim if it has been approved by the European Commission or is permitted pending assessment. There is no such claim for lion's mane and focus or concentration. So a brand that promises lion's mane improves your concentration is breaking the rules.
The same goes for us. That's why you won't find any promises about focus on our lion's mane pages. If you see them from another brand, that's a reason to take a closer look. For the same reason, lion's mane isn't in our supplements for focus and concentration. That collection includes products for which a claim on alertness, concentration or cognitive function applies, such as ginkgo and matcha, with the exact claim for each product.
If you read other people's experiences online, remember that they don't prove anything. People sometimes notice something because they expect to, which is exactly why studies use a placebo. We go into this in more detail in our article about lion's mane experiences.
Who is lion's mane not suitable for?
Lion's mane is not suitable if you're allergic to mushrooms or fungi. If you take blood thinners or other medication, are pregnant, breastfeeding, or have surgery planned, consult your doctor or pharmacist first. Supplements are not intended for children.
If you take medication for concentration, never stop taking it or replace it with a supplement on your own.
What does our lion's mane packaging say?
Our lion's mane is made from the fruiting body of Hericium erinaceus, without fillers, colorants, or preservatives. There are no approved health claims for lion's mane itself, so we don't make promises about what it does for you. That wouldn't be fair either. Each form does have clear instructions for use.
Our lion's mane powder (60 g, organic) says: "Take 1-5 scoops once daily (approximately 1-5 g), mixed with water or coffee. Preferably during or immediately after a meal." So 60 g will last 12 to 60 days, depending on how much you take. One customer weighed the scoop and found it was about 1.5 grams, so a kitchen scale that measures to 0.1 grams is more precise.
You can find out how much to take in each form in lion's mane dosage. We have a certificate of analysis (CoA) for every batch, which you can request via support@getgoyu.com.
Summary in 3 points
- In healthy adults up to age 55, we found three recent, small studies with a total of 69 participants on lion's mane and attention or concentration.
- One study found a faster score on the Stroop task 60 minutes after a single 1.8 g dose. The other two studies found no clear effect on total scores.
- There is no approved health claim for lion's mane and focus, so a brand can't promise that.
Frequently asked questions
Is lion's mane a nootropic?
Lion's mane is often described this way online. A nootropic is a substance that is supposed to improve cognitive functions, and this hasn't been demonstrated for lion's mane. It is a dietary supplement.
How quickly might you notice anything from lion's mane?
That hasn't been established. One study measured a faster score on one test 60 minutes after taking it, while another found no effect on total scores after 90 minutes. You can't infer a fixed timeframe from this.
Does lion's mane extract work better for concentration than powder?
This has not been studied. The study with a 10:1 extract found no effect on overall cognitive scores, but it was not compared with powder. Which form suits you best depends mainly on taste and convenience.
Can I combine lion's mane with coffee?
Yes, you can. The powder mixes well into coffee, and the packaging advice mentions coffee too. Whether this combination does anything for your concentration has not been studied.
How much lion's mane was used in the studies?
Between 1.8 and 3 grams per day, in different forms. You can't simply transfer those amounts to your product. Follow the daily dosage on the packaging.
Sources
- Docherty S, Doughty FL, Smith E (2023). Pilot study on single and four-week intake of lion's mane in young adults: double-blind, parallel-group. Nutrients, 15(22), 4842. Europe PMC 38004235
- Surendran G, Saye J, Binti Mohd Jalil S, et al. (2025). Acute effects of a standardised extract of Hericium erinaceus (Lion's Mane mushroom) on cognition and mood in healthy younger adults: a double-blind randomised placebo-controlled study. Frontiers in Nutrition, 12, 1405796. Europe PMC 40276537
- Evans C, Kalman D, Goodrich J, et al. (2026). A Pilot Proof-of-Concept Study to Evaluate the Physiological and Cognitive Impacts of Hericium erinaceus on Healthy Adults. Nutrients, 18(19), 3177. Europe PMC 42884628
- Packaging text for organic Lion's Mane Powder by GOYU, accessed October 19, 2026.
You can find all forms of our lion's mane on the buy lion's mane page.
This article is for informational purposes only and is not medical advice. Dietary supplements are not a substitute for a varied and balanced diet and a healthy lifestyle. If you have any concerns, are pregnant, or take medication, consult your doctor or pharmacist.
Lion's Mane by GOYU
Available as powder, capsules (without fillers), extract capsules (20:1), and tincture.
