L-Tryptophan 500 mg®

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.

Serving Size: 1 Vegetarian Capsule(s) · 1 per day

Not Present

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  Life Extension L-tryptophan 500 Mg – Promotes Healthy Sleep & Satiety

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  Life Extension L Tryptophan 90 Vegan Capsules

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  Nutricost L- Tryptophan Capsules

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• Supplement Superstore

  4.9 (1106)

  Vitamin & supplements store

  1709 S Campbell Ave, Springfield, MO 65807

  Directions(417) 864-6799

• Midwest Supplements

  5.0 (28)

  Vitamin & supplements store

  732 S Rangeline Rd Ste G, Joplin, MO 64801

  Directions(417) 901-0776

• The Vitamin Shoppe

  4.7 (132)

  Vitamin & supplements store

  1315 E Battlefield Rd #100, Springfield, MO 65804

  Directions(417) 887-1302

• GNC

  4.5 (34)

  Vitamin & supplements store

  323 S Rangeline Rd Ste 400, Joplin, MO 64801

  Directions(417) 317-5174

• Designed 4 Healing

  4.3 (12)

  Vitamin & supplements store

  451 S Springfield Ave B, Bolivar, MO 65613

  Directions(417) 326-7845

• Supplement Superstore

  5.0 (1146)

  Vitamin & supplements store

  4406 S Campbell Ave, Springfield, MO 65810

  Directions(417) 886-6799

• Powerline Health

  4.9 (7)

  Vitamin & supplements store

  24 Industry Rd a5, Rogersville, MO 65742

  Directions(417) 830-6365

• Nature's Wonders

  4.6 (185)

  Vitamin & supplements store

  1601 State Hwy 248, Branson, MO 65616

  Directions(417) 266-5432

• Tryptophan: biochemical and health implications

  H Sidransky - 2001 - api.taylorfrancis.com

  … L-tryptophan, an important indispensable amino acid, may act. Overall, it becomes apparent that L-tryptophan … The role of L-tryptophan in health and disease has become apparent from …

  200146 citations

• Oral tryptophan activates duodenal aryl hydrocarbon receptor in healthy subjects: a crossover randomized controlled trial

  GH Rueda, N Causada-Calo… - American Journal …, 2024 - journals.physiology.org

  … ) intake while containing less than 500 mg of l-tryptophan per day. Subjects were provided … l-tryptophan supplementation, which is not surprising as this study was performed in healthy …

  202428 citations

• L-Tryptophan: Basic Metabolic Functions, Behavioral Research and Therapeutic Indications

  DM Richard, MA Dawes, CW Mathias… - International …, 2009 - journals.sagepub.com

  … general healthy nutrition. While typical intake for many individuals is approximately 900 to 1000 mg daily, the recommended daily allowance for adults is estimated to be between 250 …

  2009967 citations

• Dietary tryptophan supplementation prevents sepsis by enhancing macrophage bacterial defense through GPR37 activation

  S Xie, F Lyu, K Gao, Q Chen, M Chen… - Chinese Medical …, 2026 - journals.lww.com

  … Emerging evidence suggests that active metabolites derived from gut microbe-associated metabolism of dietary essential amino acid L-tryptophan (Trp) help the host in combating …

  2026

• Summary of workshop discussions on establishing upper limits for amino acids with specific attention to available data for the essential amino acids leucine and …

  T Kimura, DM Bier, CL Taylor - The Journal of nutrition, 2012 - academic.oup.com

  … clinical study suggests 500 mg/(kg 4 d) as a possible upper limit for leucine in healthy … plasma ammonia also rose in response to leucine intakes >500 mg/(kg 4 d). After analyzing the …

  201214 citations

• Proposals for upper limits of safe intake for arginine and tryptophan in young adults and an upper limit of safe intake for leucine in the elderly

  L Cynober, DM Bier, M Kadowaki, SM Morris Jr… - The Journal of …, 2016 - Elsevier

  … to healthy young adults. The total dietary leucine ULSI proposed for elderly individuals is 500 mg … has recently been added to medical foods and dietary supplements intended for elderly …

  201635 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2025-04-24. DSLD Label ID: 328524. 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.