L-Tryptophan 500 mg

Suggested Use

Suggested use: As a dietary supplement; take 1 capsule daily with 8-12oz of water or as directed by your healthcare professional.

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• Nootropic Nation, LLC

  5.0 (1)

  Vitamin & supplements store

  176 Mulberry St APT 5, New York, NY 10013

  Directions(855) 313-2943

• GNC

  4.7 (197)

  Vitamin & supplements store

  2 Pennsylvania Plaza Ste 29B, New York, NY 10121

  Directions(212) 239-1251

• Nutricosceuticals

  Vitamin & supplements store

  156 Mott St, New York, NY 10013

  Directions(212) 475-2732

• Pure Essentials Supplements

  5.0 (1)

  Vitamin & supplements store

  121 Varick St, New York, NY 10013

  Directions(212) 758-3200

• GNC

  4.4 (88)

  Vitamin & supplements store

  753 Broadway Spc 753, New York, NY 10003

  Directions(212) 380-5999

• The Vitamin Shoppe

  4.4 (98)

  Vitamin & supplements store

  257 8th Ave, New York, NY 10011

  Directions(212) 243-0086

• GNC

  4.0 (224)

  Vitamin & supplements store

  134-136 Fulton St, New York, NY 10038

  Directions(212) 374-9473

• The Vitamin Shoppe

  4.3 (163)

  Vitamin & supplements store

  385 5th Ave, New York, NY 10016

  Directions(212) 532-4534

• A systematic review of the effect of L-tryptophan supplementation on mood and emotional functioning

  AM Kikuchi, A Tanabe, Y Iwahori - Journal of dietary supplements, 2021 - Taylor & Francis

  … This systematic review includes 11 RCTs that examined the effects of TRP intake on positive and negative mood in healthy adult populations. We have targeted healthy adult men and …

  2021109 citations

• Analysis, nutrition, and health benefits of tryptophan

  M Friedman - International Journal of Tryptophan Research, 2018 - journals.sagepub.com

  … of some of the reported health-promoting aspects of … Here, tryptophan refers to l-tryptophan and the isomeric form … the dietary supplementation of tryptophan to healthy adults (n …

  2018398 citations

• Health benefits of tryptophan in children and adults

  BN Nayak, HS Buttar - J. Pharm. Sci. Technol. Manage, 2015 - pharmacy.nmims.edu

  … overview of the role of L-tryptophan in the synthesis of serotonin, … trials suggest that L-tryptophan supplementation may be … [7], the kynurenine pathway depicts an aerobic L-tryptophan …

  201512 citations

• Newer Technologies for Use and Delivery of Nutraceuticals to Cure Insomnia and Induce Sleep

  A Mukherjee - Nutraceuticals in Insomnia and Sleep Problems, 2025 - taylorfrancis.com

  … “Nutricost L-Tryptophan Capsules” are easy to swallow capsules with 500 mg L-Tryptophan … the nutraceuticals proving to be a savior to numerous health concerns, there are a lot of key …

  2025

• Risk Assessment of" Other Substances"–L-tryptophan

  K Holvik, L Frøyland, M Haugen, M Løvik… - European Journal of …, 2020 - hal.science

  … well-designed supplementation studies with L-tryptophan in … adverse health effects of L-tryptophan supplementation in … possible adverse effects of L-tryptophan supplements, due to the …

  20202 citations

• The Effect of Griffonia simplicifolia on Pain Intensity, Central and Peripheral Sensitization, and Pain Modulation in Healthy Volunteers—A Randomized …

  AJ Schlemmer, S Hammer, S Fandler-Höfler… - Nutrients, 2026 - mdpi.com

  2026

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2024-10-24. DSLD Label ID: 306325. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.