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Pure Science Supplements

Pure Science L-Theanine Supplement 400mg - Promotes Relaxation & Healthy Stress Management - 60 Vegetarian Capsules

Pure Science L-Theanine Supplement 400mg - Promotes Relaxation & Healthy Stress Management - 60 Vegetarian Capsules

Regular price $ 9.90 USD
Regular price Sale price $ 9.90 USD
Sale Sold out
UPC: 019962502552
  • BOOSTS COGNITION AND MENTAL PERFORMANCE: L the generation of alpha waves, known to accompany periods of intense creativity and intense mental focus. Due to L-Theanine’s calming effect, it can help you concentrate better, improve mood and focus on the purpose you have for the day – whether you intend to relax or be productive.

  • CALMS THE MIND: L-Theanine 400mg increases the production of GABA, an amino acid and neurotransmitter, which works to inhibit other neurotransmitters that produce fight-or-flight responses, resulting in calming the mind and body.

  • REDUCES STRESS AND PROMOTES FEELINGS OF WELL-BEING: L capsules limit the which cause stress reactions. It helps ease negative emotions and stress caused by unregulated neurotransmitters in the brain and body, thus, promoting a natural feeling of well-being.

  • GOOD MANUFACTURING PRACTICES CERTIFIED: Produced by Good Manufacturing Practices certified facilities with the highest manufacturing and sourcing standards of Pure Science. ‘Rooted in Science, Backed by Research’ as its motto, Pure Science Supplements on producing the best and safest products for our customers to achieve greater vitality in mind and body by using only the best raw materials obtained through rigorous research.

  • MONEY-BACK GUARANTEE: As we are confident of the efficacy of Pure Science L-theanine vegan capsules, all purchases are backed by a 100% money-back guarantee should you be unsatisfied. Our products are potent for 2 years from manufacture date.
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Customer Reviews

Based on 3 reviews
Martina Flynn
5 star

Service from this company is superb!

Hi Martina Flynn,

Thank you for your review. We are glad that our L-Theanine works on you. We will continue to provide the best supplements for valued customers like you.

Thank you and let us know if you have any concerns.


If I can only have one product, it will be L- Theanine.
Best help for calm focus I've ever tried!

Jane Lahmeyer
L-Theanine for dog hyperactivity or stress

Since a holistic vet recommended this product they dubbed “fourth of July” rx ive given my 9 standard poodles often with outstanding safe results. It calms them and creates a peaceful mood. It’s non addictive and you don’t have to worry about a strong dose which is also safe. Pure Science offers them at 400 mg so I give my dogs more than one and it creates peace in our populated active home.