Can Lion’s Mane Help With ADHD?

*Disclaimer: The information provided in this article is for general educational purposes only and is not intended to diagnose, treat, cure, or prevent any medical condition. Always seek the advice of your physician or another qualified health professional. Do not disregard professional medical advice or delay seeking it because of something you have read here.

Forgetfulness, difficulty focusing, and mood swings are common for people with ADHD. This neurodevelopmental condition manifests as three core symptoms¹ — inattentiveness, hyperactivity, and impulsivity — which typically affect everyday routines, learning, and concentration. The first-line treatment for ADHD is stimulant medications, like Ritalin or Adderall, accompanied by cognitive-behavioural therapy or other evidence-based therapies. However, temporary medication shortages² and potential side effects of stimulants make people seek alternatives.

This is where Lion’s Mane comes into play. The shaggy white edible mushroom, also known as Monkey Head, has been used for centuries in traditional Chinese medicine. Apart from its culinary use, it’s believed to reduce stress, improve cognitive and emotional balance, and overall health. The list of benefits looks impressive for a regular natural supplement, which is why interest is rising significantly. Small-scale studies suggest³ that this mushroom may also help with some symptoms associated with attention-deficit/hyperactivity disorder, improving memory and focus. But can Lion’s Mane actually help with ADHD? In this article, we put together scientific research, potential mental health benefits, dosage insights, and safety notes.

Adult ADHD

Mind in focus. Keep it sharp. It takes 3 minutes, but it can help for life.

Start 3 min test

What Is Lion’s Mane? 

The official biological name for these mushrooms is Hericium erinaceus. Most people simply call it Lion’s Mane because of the unusual “fluffy” shape that resembles a lion’s mane as mushrooms grow. It’s well known in Eastern practice⁴ and has been used for centuries in China, India, Japan, and Korea for both medicinal and culinary purposes. There are legends that Buddhist monks brewed tea with Lion’s Mane to enhance their focus during meditation, calling this mushroom the “Mountain Priest” for its significance in spiritual practices. 

Key compounds of Hericium erinaceus, hericenones and erinacines, make this natural remedy quite unique. Found in the mushroom’s fruiting body, hericenones⁵ may promote the production of nerve growth factor⁶ (NGF). At the same time, erinacines⁵ from the mushroom’s mycelium can cross the blood-brain barrier and also participate in NGF synthesis. Stimulating nerve growth factor is crucial for brain health: it’s one of the foundational proteins needed for the growth, maintenance and survival of neurons. Based on that, Lion’s Man can potentially support cognitive function⁶ and improve memory.

Why Is It Linked to ADHD?

These almost magic mushrooms are available in different forms. Usually sold as Lion’s Mane supplements in capsules, powders, tinctures, gummies or teas, they can also be eaten fresh or cooked as a part of a restaurant’s menu. For instance, you may find them in gourmet pasta, soups, or even plant-based meat dishes — many say the mushrooms taste like lobster. 

Convenient to use and widely available in pharmacies and supermarkets, Lion’s Mane draws attention⁷ with its simplicity and promising effects. One very important factor to pay attention to is dosage. It is widely known that many supplements fail to test or provide an indication on standardised content of active compounds per tablet / capsule, as well as their bioavailability. When consumed in food, acute and long-term effects, if any, may vary as a function of the crop.

Lion’s Mane is typically marketed for claims such as improvement of mood, memory, and cognition, which may tickle the ear of a person suffering from ADHD, as their symptomatology can impair all these. Nevertheless, clinical trials evaluating the effect of Lion’s Mane specifically in ADHD are scarce, if at all. With a considerable proportion of ADHD in the pediatric population⁸, for which Lion’s Mane has never been tested, it is crucial to highlight the lack of scientific evidence and draw attention that the risks and benefits are not known.

How Lion’s Mane Might Affect ADHD Symptoms

Lion’s Mane is believed to positively affect brain health: increasing brain plasticity, supporting neurotransmitter balance, and activating the already-mentioned nerve growth factor. However, there is still no solid scientific evidence to support this. For now, research is limited to animal studies or trials focused on other conditions, such as Alzheimer’s disease, anxiety or depression. 

Still, this isn’t a barrier to the promotional campaigns. According to marketing labels, Lion’s Mane benefits include:

• Improved concentration and memory;
• Neuron protection and regeneration;
• Better emotional regulation (while in ADHD, feelings are harder to handle);
• Reduced stress and irritability (essential in ADHD);
• Balanced dopamine and other neurotransmitter activity (usually disrupted in individuals with ADHD);
• Reduced inflammation at the cellular level (often linked to ADHD symptoms).

How relevant these improvements are, particularly for people with ADHD, can only be inferred from basic science research. A 2021 mouse study inspecting the effect of Lion’s Mane on neurodegenerative diseases found that the mushrooms may enhance certain cognitive functions, including memory and attention. Potentially, these results could be related to the core characteristics of ADHD and ADD in humans.

So far, no research shows Lion’s Mane efficacy for the production or transmission of dopamine — the essential neurotransmitter that can cause impulsivity and emotional dysregulation⁹ in ADHD. It has also not been proven that the mushroom’s compounds have a significant effect on brain plasticity in neurodivergent people.

As always, a placebo effect of Lion’s Mane use for ADHD cannot be ruled out. On Reddit threads and other forums, users who have tried the mushroom for health level-up share their observations: reduced brain fog, mental clarity, sustained focus, and improvements in short-term memory. But also, they share concerns about the dosage and duration of supplementation. These experiences draw attention that the effects may be individual, dependent on the type of product used, the comorbidities of ADHD, but also that Lion’s Mane could be beneficial in ADHD.

Are Lion’s Mane Effects for Mental Health Science-Backed?

There are no human studies focused on Lion’s Mane effects for ADHD — yet. Modern research mostly explores how the mushroom affects brain functionality in individuals with neurodegenerative conditions, such as Alzheimer’s disease. The reason is that scientists see potential³ in the mushroom’s neuroprotective and neurodegenerative properties. Some researchers also classify it as a nootropic substance¹⁰, which may improve cognitive regulation and mental alertness. Even when tested in humans, this mushroom was evaluated in adults and older adults, whereas ADHD affects a significant proportion of the pediatric population. 

A 2025 comprehensive systematic review¹¹ of Hericium erinaceus effects covers 5 randomised controlled trials, 15 laboratory studies, 3 pilot clinical trials, as well as a case report, a single cohort study, and a computer analysis. Here’s a timeline of the most relevant studies on the therapeutic effects of Lion’s Mane:

2020
A 49-week-long study¹² of Lion’s Mane influence on Alzheimer’s disease. Researchers have observed 633 Chinese seniors and found a significant improvement in Cognitive Abilities Screening after regular use of the mushroom.

2021
In this pilot study¹³, 13 healthy adults consumed 3 grams of Lion’s Mane powder as a dietary supplement daily for a whole week. Before and after the trial, researchers have collected participants’ blood samples. The findings suggest that this supplement can regulate the composition of gut microbiota.

2022
A narrative review of 3 clinical trials exploring Lion’s Mane effects in people with Alzheimer’s disease. The review concludes that the mushroom has a positive impact on mental well-being and thinking abilities, which may apply to the ADHD condition.

2022
4 weeks, 24 participants, 2 groups, 1 single-blind placebo-controlled study¹⁴, 10 grams of the mushroom per day. But in the end, no impact on metabolic flexibility and cognition in either group.

2023
A double-blind study³ on 41 healthy adults found that Lion’s Mane may reduce stress and stimulate cognitive function, learning ability and the speed of solving cognitive tasks. Participants were taking a single 1.8g dose of the mushroom for 28 days. They showed faster reactions on tasks measuring focus and concentration (word recall, peg-and-ball, the Stroop task, and others). Following the study, participants reported lower stress levels, but no overall improvements in memory were noticed.

2023
Another double-blind study¹⁵ tested Nordic Lion’s Mane extract on 40 healthy participants, who took 1g of the mushroom (along with guayusa extract) across 3 visits. The results show, Lion’s Mane helped improve working memory, complex attention, and reaction time within 2 hours post-ingestion. Moreover, during these 2 hours, a perception of happiness increased, too.

2025
Another double-blind study¹⁶ on 18 healthy adults showed that a single 3g dose of Lion’s Mane may slightly improve motor skills on a pegboard test. In comparison, no clear changes were observed in memory or mood. The researchers highlighted that the results are mixed: on several cognitive tasks, participants performed worse after the dose. As taken in the study’s conclusion, “the effect of Hericium erinaceus on cognition and mood was inconclusive.”

All the results are still preliminary. Due to the limited duration, small group sizes, and non-ADHD samples, these studies suggest indirect evidence on how Lion’s Mane works in this mental condition. Nevertheless, the findings appear quite promising, so larger-scale studies are likely to follow in the future.

Related reading

Unmasking ADHD: Samantha Hiew on Late Diagnosis and the Layers We Don’t See

A Calm Way to Reconnect: A 60-second Body Scan Meditation for ADHD

Possible Benefits for People with ADHD

Based on related clinical research, Lion’s Mane mushroom has shown some potential effects on memory and mood, which may be helpful for people with ADHD. The most common hypotheses about the mushroom’s positive effects are: 

It stimulates nerve growth factor (NGF) and brain connections 

Hericenones and erinacines found in Lion’s Mane are proven stimulators⁵ of NGF biosynthesis. It supports neural connections, generates new nerve cells, and potentially enhances the brain’s plasticity which may ease ADHD-related attention issues.

It has anti-inflammatory properties

Neuroinflammation can be a sign of ADHD, but there is no direct link between the symptom and the condition. Anti-inflammatory effects of Lion’s Mane are still under research.

It modulates dopamine and other neurotransmitters 

For now, this assumption is backed only by rodent studies and cases of neurodegenerative diseases. Lion’s Mane can improve cognitive processing through dopamine regulation, but there is no evidence for ADHD-related memory lapses.

It has mood-balancing properties for anxiety and depression

Lion’s Mane was tested as a supplement for menopausal women with depression and anxiety. This 2010 study¹⁷ showed that after 4 weeks of use, symptoms of both conditions were slightly reduced. Though this evidence is indirect, Lion’s Mane may calm anxiety signs in overlap with ADHD.

It boosts the immune system 

Besides hericenones, the mushroom also contains beta-glucans¹⁸ that can enhance white blood cell activity and support immune functions. While other natural compounds of Lion’s Mane reduce stress and balance mood, together they can strengthen the immune system.

Unfortunately, the evidence is still insufficient. Lion’s Mane shouldn’t be used as an alternative for proven ADHD treatments: any mushroom won’t replace prescribed medication or sessions with your therapist. That’s why it’s necessary to consult your healthcare provider before experimenting with the supplements or changing your treatment plan.

Lion’s Mane Dosage for ADHD

There’s no officially recommended Lion’s Mane dosage for ADHD therapy. Since no relevant trials have been made, it could be used just as a dietary supplement. The FDA and other local authorities do not regulate them¹⁹ as strictly as medications, so the safety, quality, and doses of each product may vary. Nevertheless, one can watch out for standardised extracts of various active compounds, such as, for instance, hericenones, erinacines or beta-glucans, mushroom culture provenience, and consider discussing all such aspects with a healthcare provider when deciding which supplement to take, which dose, at what time of the day and for how long.

Clinical human studies have measured the effects of Lion’s Mane mushroom at various doses, starting from 1.8g per day³ for adults. In most cases, non-ADHD participants have taken around 3 grams²⁰ of powdered supplement every day after breakfast. Some studies increased the dose up to 10 grams daily²¹, though this had no noticeable effect on cognitive function.

Form, extract type and substance’s concentration also affect dosage. Lion’s Mane is usually sold as either plain powder or as concentrated extract, in rare cases as chewable gummies or tea blends. For powder, a typical dose ranges from 0.5 to 1.8 grams per day. For gummies, an optimal formula is 2-2.5g per serving mixed with other nutrients or vitamins. For Lion’s Mane extract, the dosage is lower since the active ingredients are more concentrated. Depending on personal response and recommendations from medical professionals, daily doses can be changed.

For general mood and memory support, an average dose of Lion’s Mane falls within 2-3 grams for adults. Some people share that the effects aren’t immediate and may be noticeable within a few weeks²². Since each product has different contents and proportions, it’s highly recommended to read the label carefully and follow the instructions. In case of any concerns, consult your therapist.

Safety and Side Effects

Lion’s Mane is generally well-tolerated and doesn’t cause allergies or discomfort. However, in clinical trials, some participants have reported mild side effects²³, including nausea, diarrhoea, abdominal discomfort, itching, and rash.

In exceptional cases, due to severe health conditions or age, side effects may feel stronger. During the research on Lion’s Mane for people with Alzheimer’s disease, about 12% of participants¹² interrupted the supplement course because of stomach pain, skin rash, or nausea. There is also at least one example of a strong immune response: researchers describe a patient’s acute hypersensitivity²³ reaction to the mushroom’s compounds.

Lion’s Mane may seem safe for individuals with ADHD and ADD. Be cautious, though: mushroom affects blood sugar²⁴ and blood clotting, thus it’s crucial to consult a therapist first, and eventually only take it under a therapist’s supervision due to the little knowledge on its effects when a condition is accompanied by other comorbidities. For example, its compounds may interact with blood thinners and diabetes medication, leading to unpredictable reactions. 

Typical restrictions include pregnancy, breastfeeding, recent or scheduled surgery, immune diseases, and mushroom allergies. People with these conditions, as well as children and adolescents, should by no means take Lion’s Mane in any dosage. 

It’s also important to note that the supplements aren’t standardised for quality and proportions of their active compounds. Not all Lion’s Mane powders or teas are the same. It can affect the body and mind differently, so medical advice is especially helpful before starting a new supplement or adjusting ADHD treatment.

Related reading

Healing With Nature: How the Outdoors Can Support Mental Health

The Healing Power of Play: How Recreation Can Improve Mental Health

FAQ

Dr. Elena Deliu, PharmD, PhD

Neuroscientist, Pharmacologist, Medical Affairs, Regulatory and Clinical Operations Expert, Pharmacist, Mentor for Researchers Beyond Academia

Expert Board Member

A patient's struggle with ADHD symptomatology is real, frustrating and the degree to which ADHD impacts their day-to-day life can be overwhelming despite medication. With the substantial recent decrease in availability of ADHD medication, the burden can significantly increase and orientation towards alternative medicine even more justified. Lion's Mane, an edible mushroom and well known medicinal plant in Asia showed promising improvements in mood, memory and cognition in clinical trials involving non-ADHD or healthy adult participants, whereas its use in children has not been documented.