L-Tryptophan®

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: 500 mg · 1–2 per day

Not Present

• 

  L- Tryptophan Supplement Powder

  BulkSupplements.com4.9(119)

  $30.97
• 

  L- Tryptophan

  BulkSupplements.com4.9(101)

  $588.39
• 

  BulkSupplements.com 5-HTP Capsules 5-Hydroxytryptophan Amino Acid Supplement

  BulkSupplements.com4.8(825)

  $25.97
• 

  BulkSupplements 5-HTP Powder

  BulkSupplements.com4.8(809)

  $149.97
• 

  BulkSupplements 5-HTP Capsules

  BulkSupplements.com4.8(817)

  $26.97
• 

  BulkSupplements L-Tryptophan Capsules

  Target4.8(112)

  $18.97
• 

  PureBulk L- Tryptophan Bags

  PureBulk5.0(16)

  $4.95Lowest
• 

  L-Tryptophan Powder

  Herbadiet

  $12.99

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.

• Protiv Nutrition

  5.0 (1)

  Vitamin & Supplements Shop

  3rd Floor, 207 Regent St., London W1B 3HH

  Directions07442 915758

• ITL Health

  5.0 (37)

  Vitamin & Supplements Shop

  50 Broadway, London SW1H 0BL

  Directions0118 321 7628

• RightNutri

  4.9 (78)

  Vitamin & Supplements Shop

  26 Queenstown Rd, London SW8 3RX

  Directions0800 098 8888

• Variety Supplements

  5.0 (379)

  Vitamin & Supplements Shop

  14 The Triangle, Bournemouth BH2 5RY

  Directions01202 556640

• Love Life Supplements

  4.8 (87)

  Vitamin & Supplements Shop

  wellington house, East Rd, Petersfield, Cambridge CB1 1BH

  Directions0800 122 3351

• British Supplements

  3.4 (275)

  Vitamin & Supplements Shop

  34, New House, 67-68 Hatton Garden, London EC1N 8JY

  Directions07768 405406

• London Supplements

  3.7 (84)

  Vitamin & Supplements Shop

  13, Waverley Industrial Park Waverley Industrial Estate, Hailsham Dr, Harrow HA1 4TR

  Directions020 8863 0300

• T-Nutrition

  4.8 (112)

  Vitamin & Supplements Shop

  33-35 Victoria St, Liverpool L1 6BG

  Directions0151 647 4320

• Wetting tryptophan with calcium pantothenate

  MJ Marchywka - academia.edu

  All chemicals have physical or other properties that may be forgotten with some label such as” vitamin.” In the case of hydrophobic nutrients, incidental mixtures with surfactants or …

  3 citations

• Adding free leucine to a balanced essential amino acid mixture suppresses intracellular transamination of isoleucine and valine in healthy older adults

  SB Knezek, MPKJ Engelen, KS Coyle, CN Perez… - Clinical Nutrition, 2026 - Elsevier

  Background Adding leucine (LEU) to protein meals enhances protein anabolism, but excess LEU reduces valine (VAL) and isoleucine (ILE) plasma concentrations. We examined in …

  2026

• Food Materials Science: Effects of Polyphenols on Sucrose Crystallization and Characterization and Creation of Alternative Salts of Thiamine

  CJ Felten - 2019 - hammer.purdue.edu

  1.2 Water-Solids Interactions Water is a ubiquitous material present to some degree in all foods and environments. A driving force originating from differences in chemical potential will …

  20191 citations

• Kokumi flavour ingredient from beef lung-development of pilot scale processing

  J Kim, R Ahmad, P Middlewood, S Haines, M Agasid… - 2025 - ampc.com.au

  The potential of beef lung and liver as kokumi seasoning ingredients was first evaluated at bench-scale in a previous project (No: 2024-1087). Building on those findings, this project (No…

  2025

• Restricting lysine normalizes toxic catabolites associated with ALDH7A1 deficiency in cells and mice

  AS Johal, HH Al-Shekaili, M Abedrabbo, AZ Kehinde… - Cell Reports, 2024 - cell.com

  Lysine metabolism converges at α-aminoadipic semialdehyde dehydrogenase (ALDH7A1). Rare loss-of-function mutations in ALDH7A1 cause a toxic accumulation of lysine catabolites…

  202411 citations

• On the age distribution of sars-cov-2 patients

  MJ Marchywka - 2020 - academia.edu

  … Human NOAEL Amount/Dose Dosing Comments L-Tryptophan …

  202015 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2021-08-23. DSLD Label ID: 252841. 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.