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- Dietary Supplement
L-theanine is a unique amino acid present almost exclusively in the tea plant (Camellia sinensis) and used safely in Japan for decades. L-theanine has demonstrated the potential to positively modify brain waves and key neurotransmitters involved in mood, focus, and memory. Consumption of L-theanine enhances brain alpha-wave activity, a sign of relaxation. The intensity of brain alpha-wave activity increases within 30-45 minutes of L-theanine supplementation, promoting relaxation, mental focus, and acuity.
This effect is most pronounced in persons subjectively feeling the highest levels of distress. A small Japanese study of university students showed 200 mg oral L-theanine led to increased brain alpha-waves and a subjective sense of relaxation. Theanine administration caused a dose-dependent relaxed, yet alert, state of mind without sedation, beginning approximately 40 minutes after oral dosing. L-theanine can enhance the production of the neurotransmitters dopamine and serotonin and appears to play a role in the formation of GABA – a neurotransmitter that acts like a "brake" during times of runaway stress. Theanine helps establish balance in the neurotransmitter system, resulting in improvements in the mental/emotional and physical disturbances resulting from being overly stressed.
Take 1 capsule one to three times daily or as recommended by your health-care practitioner.
Hypromellose (derived from cellulose) capsule, microcrystalline cellulose, leucine, silicon dioxide.
Tamper Evident: Use only if bottle is sealed.
If pregnant, consult your health-care practitioner before using this product.
Store tightly sealed in a cool, dry place.
|Serving Size: One Capsule|
|Each Capsule Contains:||Amount Per Serving||% DV|
|*Daily Value (DV) not established|
iHerb Customer Reviews
I take 2 at bedtime, because it makes me sleepy. I have tried the Thorne PharmaGaba, but it had no effect, even at 4 capsules a night. L-Theanine is not suppose to make people sleepy, and PharmaGaba IS supposed to make people sleepy. In my case I find the opposite to be true. I don't know why. Both are suppose to relax us. This helps me go to sleep, and stay asleep, so be aware of that if this is not the effect you want.