L-Tryptophan 500 mg

Suggested Use

Suggested use: As a dietary supplement; take one capsule with water 30-60 minutes before sleeping.

• 

  Swanson L- Tryptophan 500mg 60 Caps

  iHerb4.8(2700)

  $13.69
• 

  Swanson L- Tryptophan 500 mg 90 Veggie Capsules

  Swanson Health Products4.8(2700)

  $29.19
• 

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

  Swanson Health Products4.7(611)

  $20.99
• 

  L-Tryptophan Source Naturals

  Swanson Health Products4.6(1100)

  $26.99
• 

  Best Naturals L- Tryptophan 500 Mg 120 Capsules

  Target4.4(61)

  $26.95
• 

  Swanson Deep Rest and Stress Relief Featuring KaraCalm

  Swanson Health Products3.9(98)

  $18.69
• 

  Nutricost L- Tryptophan Capsules

  Target4.6(1600)

  $15.95
• 

  Swanson Glycine 500 mg 60 Capsules

  iHerb4.8(1200)

  $6.49

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• GNC

  3.9 (57)

  Vitamin & supplements store

  2550 E Morris Blvd Spc 8, Morristown, TN 37813

  Directions(423) 586-2886

• Healthy Herb Vitamin Wellness Center Inc

  4.8 (78)

  Vitamin & supplements store

  203 E Economy Rd, Morristown, TN 37814

  Directions(423) 586-2061

• (HERBALIFE MLM) Fuentes de Vida

  4.9 (7)

  Sports nutrition store

  1062 S Cumberland St, Morristown, TN 37813

  Directions(423) 307-9369

• The Sunflower Herb Shoppe

  4.9 (19)

  Herb shop

  1923 W Andrew Johnson Hwy, Morristown, TN 37814

  Directions(423) 581-8830

• Walgreens

  3.8 (64)

  Vitamin & supplements store

  2103 E Andrew Johnson Hwy, Morristown, TN 37814

  Directions(423) 586-5058

• Hill's Health Hut Inc

  4.9 (22)

  Health food store

  107 E Old Andrew Johnson Hwy, Jefferson City, TN 37760

  Directions(865) 475-2993

• Walmart Supercenter

  4.0 (5308)

  Department store

  475 Crockett Trce Dr, Morristown, TN 37813

  Directions(423) 587-0495

• Morris Nutrition

  4.0 (4)

  Tea store

  3606 W Andrew Johnson Hwy suite 2, Morristown, TN 37814

  Directions(423) 200-9025

• 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 …

  202319 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

• 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 …

  2018398 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

• … tryptophan-to-large-neutral-amino-acids ratio attenuates the effects of L-tryptophan on gut hormones and energy intake in healthy males: a randomized, cross …

  J Anjom-Shoae, M Hajishafiee, PCE Fitzgerald… - The American journal of …, 2025 - Elsevier

  Background L-tryptophan (“Trp”) and L-leucine (“Leu”), when administered intraduodenally, increase plasma cholecystokinin (CCK) and glucagon-like peptide 1 (GLP-1) and stimulate …

  20253 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.