Best By: January 2026
- Date First Available: June 2007
- Product Code: DRB-00126
- UPC Code: 753950001268
- Package Quantity: 90 Count
- Dimensions: 6.1 x 6.1 x 10.9 cm , 0.09 kg
Doctor's Best uses exclusively the Tryptopure brand of Tryptophan, manufactured by Ajinomoto of Japan.
Frequently purchased together
- Science-Based Nutrition™
- Helps Promote Normal Restful Sleep, Healthy Mood and Behavior
- Dietary Supplement
- Non-GMO / Gluten-Free / Soy Free / Vegan
L-Tryptophan provides this essential amino acid (protein building block) that is not synthesized by the body and must be obtained in the diet or supplementation. It is also essential in the production of niacin, which is then metabolized into serotonin and melatonin in the brain. These neurotransmitters exert a calming effect and encourage better cognitive focus, a positive mood, and restful sleep.
- Helps exert a calming effect
- Helps encourage better cognitive focus, a positive mood, and restful sleep
Adult Use: Take 1 capsule daily, or as recommended by a nutritionally informed physician. For optimum absorption, take separately from protein-containing foods and dietary supplements containing protein or amino acids.
Hypromellose (vegetarian capsule), microcrystalline cellulose, calcium laurate.
Consult a physician before use if pregnant, nursing, taking medications, or have a medical condition. May cause drowsiness.
Store in a cool dry place.
While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
|Serving Size: 1 Veggie Capsule|
|Servings Per Container: 90|
|Amount Per Serving||%Daily Value|
|†Daily Value not established.|