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
• 

  BulkSupplements L-Tryptophan Capsules

  BulkSupplements.com4.8(112)

  $19.97
• 

  L- Tryptophan

  BulkSupplements.com4.9(101)

  $588.39
• 

  BulkSupplements 5-HTP Capsules

  BulkSupplements.com4.8(817)

  $21.97
• 

  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
• 

  PureBulk L- Tryptophan Bags

  PureBulk5.0(16)

  $4.95Lowest
• 

  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.

• Southern Nutrition

  5.0 (1420)

  Vitamin & supplements store

  2940 Providence Lakes Blvd, Brandon, FL 33511

  Directions(813) 330-7760

• The Vitamin Shoppe

  4.4 (217)

  Vitamin & supplements store

  Plaza at, 101 Brandon Town Center Dr, Brandon, FL 33511

  Directions(813) 643-1010

• Nutrishop Valrico

  4.9 (153)

  Vitamin & supplements store

  3240 Lithia Pinecrest Rd #103, Valrico, FL 33596

  Directions(813) 684-2380

• Southern Nutrition

  5.0 (228)

  Vitamin & supplements store

  10458 Stelling Dr, Riverview, FL 33578

  Directions(813) 610-8457

• GNC

  4.6 (15)

  Vitamin & supplements store

  967 E Bloomingdale Ave Spc 106, Brandon, FL 33511

  Directions(813) 643-1500

• Summit Health Products

  3.0 (2)

  Vitamin & supplements store

  123 W Bloomingdale Ave, Brandon, FL 33511

  Directions(866) 530-4372

• The B12 Store - Brandon

  5.0 (101)

  Vitamin & supplements store

  873 Brandon Town Center Mall, Brandon, FL 33511

  Directions(813) 654-5054

• Fit Supremacy

  4.9 (66)

  Vitamin & supplements store

  3251 W Hillsborough Ave, Tampa, FL 33614

  Directions(727) 642-5424

• 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 2021-09-24. DSLD Label ID: 254830. 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.