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: 1–2 Capsule(s) · 2–3 per day

Not Present

• 

  Now Foods L-Tryptophan 500 mg

  DPS Nutrition4.6(5600)

  $20.99
• 

  NOW Foods L- Tryptophan Relaxation Support Capsules

  Walmart - Fruitful Yield4.6(4100)

  $18.98
• 

  Now Foods L- Tryptophan 500mg 90 Veg Capsules

  Natures Food Markets4.8(21)

  $22.49
• 

  Nutricost L- Tryptophan Capsules

  Target4.1(231)

  $15.95
• 

  L-Tryptophan 500mg

  Fusion Specialty Pharmacy

  $52.98
• 

  L- Tryptophan Supplement Powder

  Walmart - BulkSupplements.com4.9(119)

  $28.97
• 

  Life Extension L- Tryptophan 500 mg 90 Vegetarian Capsules

  Life Extension4.7(505)

  $24.75
• 

  Nootropics Depot L- Tryptophan Capsules

  Nootropics Depot5.0(1)

  $29.99

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Showing representative supplement & health retailers — search above for stores in your area.

• PRO360 Nutrition

  Vitamin & Supplements Shop

  Newtown Rd, Haverfordwest SA62 4NB

  Directions07970 584851

• Holland & Barrett - Haverfordwest

  4.6 (15)

  Vitamin & Supplements Shop

  Carlett Rd Riverside Key, Unit 16, Haverfordwest SA61 2LJ

  Directions0330 058 2640

• Grape Tree Tenby

  4.8 (8)

  Vitamin & Supplements Shop

  42-43 High St, Tenby SA70 7HD

  Directions01834 218288

• Specialist Supplements Ltd (Trade Division)

  4.9 (237)

  Vitamin & Supplements Shop

  Enterprise Park, Unit 4 East Street, Rhayader LD6 5ER

  Directions01597 810547

• Boots Pharmacy

  4.1 (121)

  Vitamin & Supplements Shop

  8-10 Dimond St, Pembroke Dock SA72 6AH

  Directions01646 622429

• Holland & Barrett - Carmarthen

  4.1 (11)

  Vitamin & Supplements Shop

  Unit 8, Merlin's Walk Shopping Centre, Greyfriars, Carmarthen SA31 3BN

  Directions0330 058 2640

• Superdrug

  4.3 (29)

  Health and beauty shop

  8/12 Bridge St, Haverfordwest SA61 2AD

  Directions01437 769757

• Thor Supplements

  Vitamin & Supplements Shop

  77 Pleasant St, Morriston, Swansea SA6 6HH

  Directions07494 881687

• Analysis, nutrition, and health benefits of tryptophan

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

  … nutritional significance of l-tryptophan and its isomer d-tryptophan in fortified infant foods and corn tortillas as well the possible function of tryptophan in the diagnosis and mitigation of …

  2018402 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… - … of nutrition, 2013 - academic.oup.com

  … The nutritional consequences of deficient intake of the essential amino acid L-tryptophan (L-Trp… (Nam)7 deficiency syndrome pellagra, a nutritional disease in humans caused by protein …

  201379 citations

• Natural products of relevance in the prevention and supportive treatment of depression

  B Muszyńska, M Łojewski, J Rojowski, W Opoka… - Psychiatr …, 2015 - psychiatriapolska.pl

  … It was found that 5-hydroxy-L-tryptophan, L-tryptophan (which … L-Tryptophan, 5-hydroxy-L-tryptophan are present in the … of constant supplementation of vital for health substances can be …

  2015110 citations

• Diet-related metabolic perturbations of gut microbial shikimate pathway-tryptamine-tRNA aminoacylation-protein synthesis in human health and disease

  EL Paley - International Journal of Tryptophan Research, 2019 - journals.sagepub.com

  … Alzheimer disease-associated sequence occurs in 10.8% of C&A vs 1.3% of healthy American population. This observation is of considerable interest because T2D links to AD and …

  201930 citations

• Effects of acute treatment with a tryptophan-rich protein hydrolysate on plasma amino acids, mood and emotional functioning in older women

  EL Gibson, K Vargas, E Hogan, A Holmes… - …, 2014 - Springer

  … with high doses of the precursor amino acid l-tryptophan (TRP) can result in reduced … mentally healthy, as defined by a brief medical history check (not concurrently receiving medical/…

  201445 citations

• Excretion of tryptophan metabolites as affected by pregnancy, contraceptive steroids, and steroid hormones

  DP Rose, IP Braidman - … American Journal of Clinical Nutrition, 1971 - academic.oup.com

  … The increased urinary output of N 1 -methylnicotinamide in these situations is a reflection of the enhanced capacity for the biosynthesis of nicotinic acid ribonucleotide from l-tryptophan. …

  1971130 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2020-06-24. DSLD Label ID: 229302. 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.