L-Theanine, Double Strength 200 mg Veg Capsules
WhatToTrustTM Score
12345678910
NOW®
Last updated: Mar 05, 2026
Theanine is a unique amino acid found naturally in the tea plant (Camellia sinensis). Theanine promotes relaxation while maintaining alertness and promotes healthy cognitive function.* Theanine may also support healthy vascular function through this relaxing effect.*
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Ingredients*
We only evaluate bioactive ingredients—the ones that truly contribute to a product's performance. Below is a list of bioactive ingredients found in this product.
For each ingredient, the quantity in parentheses indicates the amount per serving.
L-Theanine is a naturally occurring amino acid found in tea leaves, known for its calming effects and ability to promote relaxation without causing drowsiness.
Inositol is a carbohydrate that plays a role in cell structure and signaling, and it's being studied for potential benefits in mood regulation, metabolic health, and hormone balance.
*These product and ingredient description statements have not been evaluated by the Food and Drug Administration (FDA). This product or its ingredients are not intended to diagnose, treat, cure or prevent any disease.
Product description and ingredient list are obtained from the product's brand/company website. Ingredient description is provided by our expert.
WhatToTrustTM scores are based on ingredient quality tests as well as pre-clinical and clinical testing to ensure that a product is scientifically developed and manufactured.
Breakdown of WhatToTrustTM Score for this product
WhatToTrustTM Science Score
5/10
Ingredient Quality Testing (Batch-to-Batch Testing)
Identity and Potency Testing
yes
Purity/Contaminant Testing
yes
Ingredient Validation Testing
Ingredient Validation Pre-clinical Testing (non-Canomiks test)
yes - (Product website does not mention pre-clinical testing, but some similar ingredients have been tested.)
CanTrust by Canomiks® Ingredient Validation Pre-clinical Testing and Certification
no
Ingredient Clinical Trial/Testing
yes - (Product website does not mention clinical trial, but similar ingredients 've been clinically tested.)
Borrowed Science
no
Product Validation Testing
Product Validation Pre-clinical Testing (non-Canomiks test)
no
CanTrust by Canomiks® Product Validation Pre-clinical Testing and Certification
no
Product Clinical Trial/Testing
no
Borrowed Science
no
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WhatToTrustTM Score
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