This is a fantastic complement. To function, it must be taken on an empty stomach. I go from being restless, agitated, and depressed to feeling light and pleased in less than 30 minutes. To avoid jitters, drink with tea or coffee. When I don't take this supplement, I notice a significant difference in my ability to manage stress. I suffer from terrible anxiety, however theanine keeps it at bay for the majority of the day!
Dietary Supplement Sleep Stress Gluten Free L-theanine is a unique amino acid that is found almost exclusively in the tea plant (Camellia sinensis) and which has been used safely in Japan for decades. L-theanine has been shown to positively modify brain waves and the key neurotransmitters involved in mood, focus, and memory. L-theanine enhances the production of the neurotransmitters dopamine and serotonin, and also appears to play a role in the formation of GABA – a neurotransmitter that acts like a "brake" during times of runaway stress. L-theanine also enhances brain alpha-wave activity, a marker of relaxation. This effect has been observed to be most pronounced in individuals subjectively feeling the highest levels of stress. A Japanese study of university students found that 200 mg of L-theanine led to increased brain alpha-waves and a subjective sense of relaxation. In the same study, L-theanine administration also caused a dose-dependent relaxed, yet alert, state of mind without sedation, beginning approximately 40 minutes after ingestion. L-theanine can enhance the production of the neurotransmitters dopamine and serotonin, and it appears to play a role in the formation of GABA – a neurotransmitter that acts like a "brake" during times of runaway stress. L-theanine helps establish balance in the neurotransmitter system, resulting in improvements in the mental/emotional and physical disturbances resulting from being overly stressed.
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Dietary Supplement Sleep Stress Gluten Free L-theanine is a unique amino acid that is found almost exclusively in the tea plant (Camellia sinensis) and which has been used safely in Japan for decades. L-theanine has been shown to positively modify brain waves and the key neurotransmitters involved in mood, focus, and memory. L-theanine enhances the production of the neurotransmitters dopamine and serotonin, and also appears to play a role in the formation of GABA – a neurotransmitter that acts like a "brake" during times of runaway stress. L-theanine also enhances brain alpha-wave activity, a marker of relaxation. This effect has been observed to be most pronounced in individuals subjectively feeling the highest levels of stress. A Japanese study of university students found that 200 mg of L-theanine led to increased brain alpha-waves and a subjective sense of relaxation. In the same study, L-theanine administration also caused a dose-dependent relaxed, yet alert, state of mind without sedation, beginning approximately 40 minutes after ingestion. L-theanine can enhance the production of the neurotransmitters dopamine and serotonin, and it appears to play a role in the formation of GABA – a neurotransmitter that acts like a "brake" during times of runaway stress. L-theanine helps establish balance in the neurotransmitter system, resulting in improvements in the mental/emotional and physical disturbances resulting from being overly stressed.
- SKU
- 3-18542
- Brand
- Thorne
- Category
- health / supplements / categories / amino-acids
- Variants
- 1
Customer reviews
This is the best quality L-Theanine that I've been able to find. Based on the information on the back of the bottle, it is sourced from Japan, using the Japanese process (the Japanese are the ones who figured out how to isolate it from green tea). Other companies try to extract it from other materials (not green tea). Also, this bottle has the correct dosage. Other companies have much too high of a dose. I take it once or twice per day. It definitely increases my focus. The effect kicks in about 20 minutes after I take it.
This is a good brand, it was expensive, but I have an anxiety disorder and it somehow helps. It depends on the anxiety level you have.
I take Thorne theanine and magnesium bisglycinate at night. It reduces anxiety and pre-bedtime mental turmoil, helps me fall asleep faster, and improves sleep quality. Thorne is one of the most respected premium American brands in the world of nutritional supplements and vitamins. Many of its products are NSF Certified for Sport (the world's most stringent sports anti-doping certification).
I have trouble sleeping. My Registered Dietician suggested that I take L-theanine to help me relax so I can sleep better. She wanted me to use a good, quality supplement with the best ingredients and recommended the one she uses. I live in Canada and couldn’t find Thorne there so I searched online and found it on iHerb. I also ordered Thorne magnesium byglycinate and sleep so much better now.
I have ADHD and this helps an awful lot. I take two tablets today one in the morning one at night.
The quality of this L-theanine supplement is excellent, made with Suntheanine®, a clinically studied and trusted form. The ingredients are clean and simple, with no unnecessary fillers. The capsule size is small and easy to swallow, and the dosage of 200 mg per capsule is convenient for daily use. The benefits are noticeable with calmer focus, reduced stress, and better relaxation without drowsiness. The taste is neutral since the capsules have no flavor. The package size provides a solid supply, making it easy to stay consistent with supplementation.
When I started taking this product I didn't notice much but when I started taking Thorne Theanine at bedtime. I noticed improvement in my sleep and even remember my dreams
I've tried a few other brands of L Theanine and I always circle back to this one. It is the highest price compared to other brands, but the quality and effectiveness can't be beat. I recommend this one to everyone that says their experience stress, anxiety, or restless sleep. I'm not a doctor, but the industry I work in is high level stress that carries to home life. All my coworkers and friends take this one now and can't go without it.
I hate to give negative feedback, but I used this L-theanine supplement consistently for a week before writing this review. Unfortunately, every time I took it, it gave me a headache. I also didn’t notice any improvement in relaxation, focus, or sleep, even when taking it as directed. It had no positive effect on me and felt like a complete waste of money. Sadly, I won’t be purchasing it again.