' 
![]()
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 45 Reviews
8.3
Supplement Facts
Serving Size: 1 Veg Capsule
Amount Per Serving
%DV
L-Theanine
200 mg
*
Inositol
100 mg
*
Most Useful Reviews
9.5
Stress management
ALPHA waves in the sea of CALM or how to win STRESS! I regret not having iHERB and Theanine earlier; it could have saved my health! Now, Theanine is a vital supplement in my arsenal. It's well-known how stress depletes the body and drains energy. I take Theanine in my tea, and within 30-40 minutes, I feel STRESS-RESISTANT. It calms my mind and helps my cognitive functions, crucial at my age of 50. I highly recommend Theanine as an effective nootropic for cognitive support and stress relief.
Read More
9.5
Effective sleep aid
Excellent! The package arrived quickly, and it lasts for four months. I bought it for its quality ingredients to help with insomnia. Taking it with Apigenin and Magnesium L-Threonate an hour before bed truly works! I’ve noticed better mental focus and relaxation, alongside improved immunity. I highly recommend it to anyone suffering from sleep problems.
Read More
9.5
Life-changing results
It changed my life! I'd been grappling with unwarranted stress, and despite trying various methods like meditation and appropriate medication, nothing worked. I discovered L-Theanine in an ADHD forum, where some noted its helpfulness with sleep and stress. After nearly a month of taking it alongside my morning tea, the stress faded. Most importantly, my insomnia improved; I now sleep for 6.5 hours straight, a true miracle for me! I find 100 mg might suit most, as 200 mg has a significant effect on me. I'll compare the two and update later.
Read More
User Reviews
USERS' SCORE
Good
Based on 45 Reviews
8.3
10
Promotes deep sleep
Promotes healthy deep sleep. For a long time, I suffered from severe insomnia and took dangerous benzodiazepine sleeping pills. It was only when I paired 400-800mg of L-theanine with 2-4g of taurine and tryptophan nightly that I managed to sleep without drugs again!
9.5
Stress management
ALPHA waves in the sea of CALM or how to win STRESS! I regret not having iHERB and Theanine earlier; it could have saved my health! Now, Theanine is a vital supplement in my arsenal. It's well-known how stress depletes the body and drains energy. I take Theanine in my tea, and within 30-40 minutes, I feel STRESS-RESISTANT. It calms my mind and helps my cognitive functions, crucial at my age of 50. I highly recommend Theanine as an effective nootropic for cognitive support and stress relief.
Read More
9.5
Effective sleep aid
Excellent! The package arrived quickly, and it lasts for four months. I bought it for its quality ingredients to help with insomnia. Taking it with Apigenin and Magnesium L-Threonate an hour before bed truly works! I’ve noticed better mental focus and relaxation, alongside improved immunity. I highly recommend it to anyone suffering from sleep problems.
Read More
9.5
Naturally calming
Excellent! I combine it with sleeping pills and melatonin at bedtime. I've struggled with insomnia since childhood due to ADHD. Theanine helps me feel sleepy naturally and allows me to go to bed without the grogginess. I feel calmer during the day and no longer rely on strong prescription drugs.
Read More
9.5
Insomnia relief
An amazing tool! This product from Ayherb worked from the first day. I had insomnia restored, and my general condition became softer and more comfortable. I took one capsule daily for two weeks and alternated with breaks. I really liked this remedy!
