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Brand: Doctor's Best     Categories: Amino Acids / L Tryptophan / Sleep


Best L Tryptophan 500mg











Doctor's Best

Best L Tryptophan 500mg


Veggie Cap





Best L Tryptophan 500mg

Best L Tryptophan 500mg  90  Veggie Cap

Supplement Facts

Serving Size: 1 Capsule

Amount per
% Daily*

Ajinimoto L-Tryptophan




**Daily value not established.

Other Ingredients: Vegetable capsule, cellulose, magnesium stearate (vegetable source), silicon dioxide.

Suggested Use: Take 1 or 2 capsules daily, or as directed by a health practitioner. For optimum absorption, take separately from protein-containing foods and dietary supplements containing protein or amino acids.

Suitable for vegetarians.


Dr's Best L-tryptophan now featuring Ajinomoto TryptoPure™ surpasses all testing criteria established by the U.S. Pharmacopeia (USP), Japan Pharmacopeia (JP), and European Pharmacopeia (EP) standards.

L-tryptophan is an essential amino acid (protein building block) in human nutrition. Essential amino acids are not synthesized by the body and must be obtained in the diet.

Best L-Tryptophan featuring TryptoPure™

• TryptoPure™, which is unsurpassed in purity by any other l-tryptophan in the world today, is a trademark of Ajinomoto Company, Inc.
• Ajinomoto in Japan is the word's foremost producer of pharmaceutical-grade amino acids, including TryptoPure.
• TryptoPure surpasses all testing criteria established by the U.S. Pharmacopeia (USP), Japan Pharmacopeia (JP), and European Pharmacopeia (EP) standards.
• U.S. importation of Ajinomoto's l-tryptophan has proceeded uninterrupted for over 25 years.
• Best L-Tryptophan featuring TryptoPure is packaged in veggie caps and suitable for vegetarians.
• TryptoPure is used in hospitals and pharmacies all over the world.
• It is additive-free, solvent-free, 100% fermented, and GMP certified.




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Products on this site are not intended to diagnose, treat, cure, or prevent any disease. 
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