Short answer: lion's mane (Hericium erinaceus) is an edible mushroom that's been linked in small human trials to better memory scores in older adults, quicker performance on a focus task in young adults, and lower stress and low-mood scores. The trials are small and not all results are positive, so think of it as a promising daily habit, not a magic pill.
Why people are interested
In lab studies, compounds from lion's mane (hericenones and erinacines) have been linked to nerve growth factor (NGF) activity, a protein that supports the growth and upkeep of nerve cells (study). That's what put lion's mane on the map for brain health.
What the human trials found
- Memory in older adults: in a 16-week placebo-controlled trial in adults aged 50 to 80 with mild memory complaints, lion's mane powder (3 g a day) was linked to higher cognitive test scores than placebo. Scores dropped again after people stopped taking it (study).
- Everyday cognition: a 12-week placebo-controlled study linked lion's mane fruiting body to better scores on a standard cognitive screening test (study).
- Focus in young adults: in a pilot study of 41 healthy adults aged 18 to 45, a single 1.8 g dose was linked to faster performance on the Stroop focus test an hour later, with a trend toward lower stress after 28 days (study).
- Stress and mood: in a 4-week study of 30 women, lion's mane cookies were linked to lower scores for low mood and anxiety compared with before (study).
- Mixed results: a 2025 placebo-controlled crossover trial of a single dose in 18 young adults found no overall change in cognition or mood scores 90 minutes later (study). That's normal for a young research area, and it's why we keep our wording careful.
How to read this research
- Most trials are small (30 to 50 people) and used different products and doses (about 1 to 3 g a day).
- Benefits showed up over weeks of daily use and faded when people stopped, so consistency matters.
- Look for products that state the part of the mushroom and a standardized amount, so you know what you're getting.
How to take it
Most people take lion's mane in the morning, often with coffee, as part of a focus routine. Our Lion's Mane Mushroom uses organic fruiting body and mycelium standardized to 40% polysaccharides (400 mg per 2-capsule serving). Pair it with a solid sleep schedule and regular movement for the best foundation for focus.
The bottom line
Lion's mane is one of the best-studied focus mushrooms, with small trials linking it to better memory scores, quicker focus and lower stress. If you want to try it, take it daily for at least a month. Start with our Lion's Mane Mushroom, two capsules each morning.
