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.

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

Not Present

• 

  Swanson L- Tryptophan 500 mg 90 Veggie Capsules

  Swanson Health Products4.7(2000)

  $9.58
• 

  NOW Foods L- Tryptophan Relaxation Support Capsules

  Swanson Health Products4.6(4100)

  $15.49
• 

  Source Naturals L Tryptophan

  Swanson Health Products4.6(1100)

  $21.59
• 

  Swanson Glycine 500 mg 60 Capsules

  iHerb4.8(1300)

  $6.49
• 

  Doctor's Best L- Tryptophan 500 mg 90 Veggie Caps

  Swanson Health Products4.7(642)

  $19.99
• 

  Nutricost L- Tryptophan Capsules

  Target4.1(231)

  $15.95
• 

  L- Tryptophan

  SFI Health

  $43.99
• 

  Now Foods L-Tryptophan 500 mg

  Wonder Laboratories4.6(5600)

  $23.39

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• Supplement Warehouse

  4.9 (526)

  Vitamin & supplements store

  4643 S University Dr, Davie, FL 33328, United States

  Directions+1 954-434-3693

• The Vitamin Shoppe

  4.8 (145)

  Vitamin & supplements store

  20600 Lyons Rd, Boca Raton, FL 33434, United States

  Directions+1 561-479-4223

• Healthsupp

  5.0 (145)

  Vitamin & supplements store

  1142 S Federal Hwy, Fort Lauderdale, FL 33316, United States

  Directions+1 954-260-7151

• The Nutrition Shoppe Inc.

  5.0 (88)

  Vitamin & supplements store

  5601 Powerline Rd Ste 407, Fort Lauderdale, FL 33309, United States

  Directions+1 954-563-0442

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  4420 W Hillsboro Blvd Ste 106, Coconut Creek, FL 33073, United States

  Directions+1 888-491-4002

• Florida Supplement

  4.5 (20)

  Manufacturer

  10301 Commerce Pkwy, Miramar, FL 33025, United States

  Directions+1 954-925-1924

• PLANET SOURCE

  4.7 (3)

  Vitamin & supplements store

  5645 Coral Ridge Dr Ste 397, Coral Springs, FL 33076, United States

  Directions+1 800-730-8865

• Vitamin Emporium

  4.5 (37)

  Vitamin & supplements store

  3752 W Hillsboro Blvd, Deerfield Beach, FL 33442, United States

  Directions+1 954-570-8081

• Tryptophan prevents the development of non-alcoholic fatty liver disease

  R Yanko, M Levashov, OG Chaka, V Nosar… - Diabetes, Metabolic …, 2023 - Taylor & Francis

  … Despite the essential role of tryptophan in maintaining health… Our results show that L-tryptophan attenuates … -6-phosphatase was determined by the Swanson method, measuring the …

  202320 citations

• 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

• Characterisation of an acute anorexigenic action of l-tryptophan: a link with neural mechanisms regulating appetite

  SN Gartner - 2018 - researchcommons.waikato.ac.nz

  … TRP supplementation in healthy participants with no sleep problems caused a mild hypnotic … A range of oral doses seem effective in humans including 500 mg or 1 g mixed with 30 mg …

  2018

• Supplementing healthy women with up to 5.0 g/d of L-tryptophan has no adverse effects

  C Hiratsuka, T Fukuwatari, M Sano, K Saito… - The Journal of …, 2013 - academic.oup.com

  … intake of the essential amino acid L-tryptophan (L-Trp) have … Indeed, pellagra remains a public health problem in many … the nutritional requirements for L-Trp (300 mg/d in adults) (12) …

  201379 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 …

  2018402 citations

• A heretofore undisclosed crux of eosinophilia-myalgia syndrome: compromised histamine degradation

  MJ Smith, RH Garrett - Inflammation Research, 2005 - Springer

  … import alert in November 1989 for LTCDS in which L-tryptophan is the sole or major component [… [73] Swanson DR. A second example of mutually isolated medical literatures related by …

  200543 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2025-02-23. DSLD Label ID: 322733. 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.