BrainMD L-Theanine Gummies: Dose, Cost, Evidence and Safety

Each BrainMD L-Theanine gummy contains 100 mg. A bottle has 60 berry-flavored, vegan, sugar-free gummies. The label is for adults and children 8 and up, with a suggested range of 1 to 4 gummies a day.

A bottle costs $23.95, or $0.40 per 100 mg. Subscriptions bring the price to $17.97 to $20.36 per bottle. At Vitacost on October 12, 2026, plain L-theanine capsules from NOW Foods and Sports Research cost $0.09 to $0.17 per 100 mg.

A 2026 review of 31 trials found a short-term attention benefit from 200 mg and a modest reduction in stress. It found no consistent effect on anxiety.

If you are comparing the label with the research, dose is the first detail to notice. Most trials cited on BrainMD’s product page used at least 200 mg of L-theanine, twice the amount in one gummy. L-theanine is an amino acid found in tea and sold as a supplement for calm and focus. BrainMD, the supplement brand psychiatrist Daniel Amen started in 2009, sells these gummies on its website and at Vitacost. Two gummies provide 200 mg and cost $0.80 at the one-time price.

See L-Theanine Gummies on BrainMD’s site

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What’s in BrainMD L-Theanine Gummies

Each pectin gummy contains 100 mg of L-theanine. BrainMD markets the product as fast-acting relief for stress and anxiousness.¹ Pectin replaces animal gelatin, so the gummies are vegan and plant-based.

The US Supplement Facts panel lists 6 calories, 2.5 g of carbohydrate and 0 g of sugar per gummy. Monk fruit, erythritol and maltitol provide the sweetness. The label does not list the amount of either sugar alcohol.

BrainMD says its supplements are made in US facilities that follow current Good Manufacturing Practice and are tested for identity, purity and potency before shipping. The gummy label does not show a third-party testing badge. Dietary supplements do not need FDA approval before they go on sale.²

BrainMD L-Theanine Gummies Dose and Research

BrainMD’s FAQ recommends one gummy a day for adults and children 8 and up, with up to four a day as needed, on an empty stomach. Its how-to-use tab says to take one gummy as needed. Together, those directions give a labeled range of 100 to 400 mg of L-theanine a day.

BrainMD describes 100 mg as a clinically effective dose, but most studies on its product page tested higher amounts. Hidese 2019 gave healthy adults 200 mg a day for 4 weeks,3 Haskell 2008 tested 250 mg, and Lyon 2011 gave boys with ADHD 400 mg a day.³ Giesbrecht 2010 was the only cited study using less: 97 mg, alongside 40 mg of caffeine.

The 2026 meta-analysis of 31 trials found an attention benefit after a single 200 mg dose.⁴ Two gummies provide that amount, so a 60-count bottle would last 30 days. Ask a doctor how much to take, especially for a child.

BrainMD L-Theanine Price Compared With Other Supplements

BrainMD charges $23.95 for 60 gummies, or $0.40 per 100 mg. That is about three times the cost per 100 mg of plain L-theanine capsules from NOW Foods or Sports Research, and close to Thorne’s capsules. On this comparison, BrainMD costs less per 100 mg than OLLY and Natrol calm gummies. Those products contain less L-theanine per gummy and have added sugar.

Prices from brainmd.com (first row) and Vitacost, October 12, 2026. Per 100 mg is the list price divided by the total L-theanine in the container.

At two gummies a day, BrainMD costs $0.80 a day at the one-time price or $0.60 a day on the 6-month subscription. One 200 mg NOW capsule costs about $0.17. NOW’s berry chewable costs less per 100 mg, but it also contains inositol and taurine.

Check today’s price on BrainMD’s site

BrainMD Subscription Shipping and Returns

A subscription costs $20.36 for one bottle each month (15% off), $19.16 per bottle for three bottles every 3 months (20% off), or $17.97 per bottle for six bottles every 6 months (25% off). Subscriptions ship free in the US. One-time orders under $75 have a shipping charge.

BrainMD’s terms allow it to change prices for existing subscriptions as well as new ones. Only California residents can cancel online.⁵

BrainMD displays a “100% Money Back Guarantee” badge. Its refund policy allows a full refund for unopened bottles returned within 60 days of purchase, minus shipping costs in both directions. For an opened bottle, contact BrainMD within 60 days. The standard option is store credit, though refunds are also available. Returns without an authorization number incur a restocking fee of 15% of the product price.

Other BrainMD L-Theanine Supplements

BrainMD also sells two L-theanine capsule products. Each costs more per bottle than the gummies.

Relaxing Lavender + L-Theanine costs $39.95 for 30 vegetarian capsules. Each capsule contains 200 mg of L-theanine and French lavender oil powder, or about $0.67 per 100 mg.

Quiet My Mind Sleep costs $44.95 for 60 vegan capsules. Two capsules contain 400 mg of L-theanine, 150 mg of magnesium and 30 mg of affron saffron, with no melatonin. The L-theanine costs about $0.37 per 100 mg, though the price also includes magnesium and saffron.

A search for theanine on BrainMD’s store returns 10 products. Calm My Brain costs $46.95 and provides 400 mg in three capsules, the same amount as the maximum four gummies listed on the gummy label.

What Research Says About L-Theanine for Anxiety Stress Sleep and Attention

Research has found a short-term attention benefit and small effects on stress and sleep. Findings on anxiety have been inconsistent. Our guide to L-theanine for anxiety explains how L-theanine may work and reviews the doses studied.

A 2026 meta-analysis of 31 randomized trials involving 1,168 people found a modest reduction in acute stress. Studies at high risk of bias drove much of that result. Anxiety findings were inconsistent and not statistically significant, except in one study of psychotic anxiety that used 400 mg a day for 8 weeks. A single 200 mg dose improved reaction time on attention tests.⁴

In a 2019 trial, 46 adults with generalized anxiety disorder were already taking an antidepressant. Adding 450 to 900 mg of L-theanine a day for 8 weeks did not improve anxiety or insomnia severity more than placebo. Participants taking L-theanine did report greater satisfaction with their sleep.⁶

For sleep, a 2025 meta-analysis of 19 trials found small improvements in self-rated sleep quality, time to fall asleep and daytime functioning. The authors noted that few trials tested L-theanine by itself.⁷ A 2025 review funded by the tea industry found that L-theanine combined with caffeine helped attention during the first 2 hours.⁸

Researchers have not tested BrainMD’s finished gummies in a clinical trial.

This article is for information only and is not medical advice. Talk to a doctor or licensed clinician before starting, stopping, or changing any treatment.

BrainMD L-Theanine Side Effects Interactions and Pregnancy

Drug references rate L-theanine as possibly safe for short-term use by mouth. The trials in the 2026 meta-analysis reported no serious adverse events.5,10 Long-term safety is unknown. Reported side effects include changes in sleep and an upset stomach. One reviewer said the gummies caused nausea when taken on an empty stomach.

Blood Pressure Medicine Stimulants and Sleep Medicine

Drug-interaction references rate two interactions as moderate. L-theanine may lower blood pressure too much when taken with blood pressure medicine. It may also make stimulant medication less effective.⁹ Memorial Sloan Kettering says combining L-theanine with sleep medicines such as lorazepam or zolpidem may increase drowsiness.¹⁰

BrainMD’s product page does not include a medication warning. A reviewer in July 2026 said they learned after ordering that they could not take the product with a prescription medication.

Pregnancy and Breastfeeding

BrainMD advises against L-theanine during pregnancy or breastfeeding because there is not enough safety information. Memorial Sloan Kettering also lists pregnancy and breastfeeding as reasons it may not be safe.¹⁰

Children Age 8 and Up

BrainMD labels the gummies for children 8 and up. Its cited pediatric study included 98 boys ages 8 to 12 with ADHD who took 400 mg a day for 6 weeks. Sleep efficiency measured by wrist monitors improved, but the time it took to fall asleep did not change. The study examined sleep, not anxiety.³ Drug references rate L-theanine as possibly safe for children for up to 6 weeks.⁹ Ask your child’s pediatrician before giving it to them.

This article is for information only and is not medical advice. Talk to a doctor or licensed clinician before starting, stopping, or changing any treatment.

What Buyers Say About BrainMD L-Theanine Gummies

On October 12, 2026, BrainMD’s website had 416 reviews of the gummies, with an average rating of 4.7 out of 5. Of those, 342 gave five stars and 11 gave one or two stars.

Reviewers most often describe feeling calmer without drowsiness, usually within 30 to 60 minutes of a stressful moment. Many say they take two gummies at a time. Parents also mention giving them to children.

Taste and texture draw the most complaints. Other low ratings mention no noticeable effect, a sticker covering the expiration date, or an unwanted subscription. Across the company, BrainMD had a 3.0 rating from 22 Trustpilot reviews and a C from the BBB on September 28, 2026.

In broader discussions, L-theanine users describe a mild calming effect at 100 to 200 mg. Some say it helps them sleep; at least one says taking it at bedtime disrupts sleep.

Who Might Choose BrainMD L-Theanine Gummies

These gummies may suit an adult who wants a sugar-free, vegan chewable with L-theanine as its only active ingredient. The tradeoff is price: they cost more per 100 mg than capsules.

If you are pregnant or breastfeeding, or take blood pressure medicine, stimulants or sleep medicine, check with a doctor before using L-theanine. A physician-reviewed Talkiatry article says doctors do not typically recommend over-the-counter remedies such as L-theanine because more research is needed.¹¹

If anxiety is affecting your work, sleep or relationships, cognitive behavioral therapy is an evidence-based treatment to consider. BetterHelp offers online therapy through self-pay subscriptions or insurance, and is in network with 125+ health plans. Talkiatry offers online psychiatry that accepts insurance. Our guide to anxiety treatment without medication can help you explore options before speaking with a clinician.

If you are thinking about suicide or feel unsafe, call or text 988 to reach the Suicide & Crisis Lifeline. Call 911 in an emergency.

Compare BrainMD’s L-theanine options on its site