L-Tryptophan 500 mg®
Amino Acids & ProteinBrand: The Vitamin Shoppe
Functions
Net Contents
120 Veggie Capsule(s)
Serving Size
1 Veggie Capsule(s)
Servings Per Container
Not specified
Supplement Form
Capsule
Bar Code (UPC/SKU)
7 66536 02538 1
Product Version
Item No. VS-2538 1671379 FS 37
Label Analysis
Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.
Single-ingredient formula listed in Supplement Facts.
Every active ingredient discloses a specific amount per serving.
Label states: Gluten-Free.
This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.
Allergen Guide
Free From
- Milk
- Soy
- Gluten
Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.
Supplement Facts
Serving Size: 1 Veggie Capsule(s) · 1 per day
| Ingredient | Amount Per Serving | |
|---|---|---|
| L-Tryptophan | 500 mg | — |
Not Present
Other Ingredients
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
Directions: Take one (1) veggie capsule daily, preferably with a meal.
Warnings & Precautions
Precautions re: Children
Keep out of reach of children.
Precautions re: All Other
Tamper evident Do not use if outer seal is broken or missing.
Precautions re: Pregnant or Nursing or Prescription Medications
Warning: Consult your healthcare provider prior to use if you are pregnant, nursing, taking any medication or have any medical conditions.
Precautions re: All Other
Do not use with alcohol or when operating heavy machinery.
Storage
Storage
Store in a cool, dry place.
Formulation
Formulation re: Does NOT Contain
Gluten free Dairy free Soy free Nut free
Formulation re: Does NOT Contain
Does not contain: Gluten, sugar, salt, preservatives, artificial colors or flavors.
FDA Statements
FDA Statement of Identity
Dietary Supplement
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
Other Label Statements
General Statements: All Other Content
Specialty
General Statements: All Other Content
Mood Relaxation
General Statements: All Other Content
Visit www.vitaminshoppe.com or call 1-800-223-1216 for more information and to reorder.
General Statements: All Other Content
Learn more at vsquality.net
General Statements: All Other Content
Item No. VS-2538 1671379 FS 37
Manufacturer & Distributor
Distributor
Vitamin Shoppe, Inc.
Secaucus, NJ, 07094
1-800-223-1216
Where to Buy Locally
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.
le complement bio
5.0 (1)Vitamin & supplements store
30 Av. Charles de Gaulle, 32600 L'Isle-Jourdain
POWER NUTRITION
4.8 (234)Vitamin & supplements store
23 bis Rue Aristide Berges Local 2, 31270 Cugnaux
ANATOMIK BODY Colomiers - Boutique de Nutrition / Compléments alimentaires
4.9 (60)Vitamin & supplements store
1 avenue du louron, Place des Marots, 31770 Colomiers
BioTechUSA Portet
4.9 (192)Vitamin & supplements store
110 Bd de l'Europe, 31120 Portet-sur-Garonne
First Nutrition By Bogaert
5.0 (48)Vitamin & supplements store
11 Rue du Faubourg Bonnefoy, 31500 Toulouse
Bsa shop - Nutrition sportive
3.0 (20)Vitamin & supplements store
1 Av. du Louron, 31170 Colomiers
Nalencie - Compléments alimentaires
5.0 (18)Vitamin & supplements store
39 Chem. Fournolis, 31170 Tournefeuille
BioTechUSA Gramont
4.4 (76)Vitamin & supplements store
2 Chem. de Gabardie, 31200 Toulouse
Research & Studies
L-Tryptofaan powder
J South - forum.bodybuilding.nl
… Een japans bedrijf had genetisch gemannipuleerde bacterien gemaakt die L-tryptophan aanmaaten om de productie omhoog te schroeven. LAter bleek deze bacterien naast tryptofaan …
l-Tryptophan
BMD Knapp, MJ Cupp, TS Tracy - Dietary Supplements: Toxicology and …, 2003 - Springer
… available in the United States include Tryptophan PRN 350 mg capsules, L-tryptophan 500 mg capsules, Free Aminos 750 mg capsules, and Free Aminos powder, sold under the …
20035 citationsManaging mood-related symptoms utilizing diet, targeted nutrient supplementation, and lifestyle changes: A case series
K Ross, M VanNortwick - EXPLORE, 2022 - Elsevier
Background The Office of Disease Prevention and Health Promotion reports that mental health disorders are one of the most “common causes of disability,” affecting 18.1% of adults in …
20223 citationsSupplementing 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
… The nutritional consequences of deficient intake of the essential amino acid L-tryptophan (L-Trp) have been known for more than 7 decades (1). L-Trp plays a critical role in preventing …
201379 citationsXanthurenic Acid Excretion in Urine After Oral Intake of 5 Gram L-Tryptophan by Healthy Volunteers: Standardisation of the Reference Values
M Hoes, EKJ Kreutzer, N Sijben - Clinical Chemistry and …, 1981 - edoc.hu-berlin.de
… The results of the first and second tests demonstrate that prior loading with L-tryptophan does … It is possible that the L-tryptophan dose is important for the urine collection period. Authors …
198113 citationsThe importance of quality specifications in safety assessments of amino acids: The cases of L-tryptophan and L-citrulline
HA Oketch-Rabah, AL Roe, BJ Gurley… - The Journal of …, 2016 - academic.oup.com
… as DSs and in pharmaceutical products, L-tryptophan (L-Trp) and L-… L-tryptophan supplementation does not improve running … associated with ingestion of L-tryptophan—United …
201622 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2018-11-21. DSLD Label ID: 183565. 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.
Related Products

100% Beef Aminos
Universal

100% Beef Aminos
Universal

100% Beef Aminos
Universal

100% Beef Aminos
Universal