Net Contents
2 oz.
Serving Size
2.25 tsp
Servings Per Container
57
Supplement Form
Powder
Bar Code (UPC/SKU)
7 33739 00263 1
Product Version
CODE 0263 V2
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: Vegan, Vegetarian, Gluten-Free.
This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.
Supplement Facts
Serving Size: 2.25 tsp · 2–3 per day
| Ingredient | Amount Per Serving | |
|---|---|---|
| L-Tryptophan | 950 mg | — |
Not Present
Other Ingredients
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
SUGGESTED USAGE: As a dietary supplement, take one or two 1/4 level teaspoons 2 to 3 times daily on an empty stomach or as directed by your physician. Best used at bedtime.
Warnings & Precautions
Precautions re: All Other
Caution: For adults only.
Precautions re: Pregnant or Nursing or Prescription Medications
Consult physician if pregnant/nursing, taking medication (especially anti-depressant medications such as SSRI’s or MAOI’s), or have a medical condition.
Precautions re: All Other
May cause drowsiness.
Precautions re: Children
Keep out of reach of children.
Precautions re: Allergies
Produced in a GMP facility that processes other ingredients containing these allergens.
Precautions re: All Other
Caution: Do Not Eat Freshness Packet Enclosed.
Storage
Storage
Store in a cool, dry place after opening.
Formulation
Formulation re: Vegetarian/Vegan
Vegetarian/Vegan
Formulation re: Does NOT Contain
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.
FDA Statements
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.
FDA Statement of Identity
A Dietary Supplement
Other Label Statements
Brand IP Statement(s) re: (c), (TM), (SM)
NOW(R) L-Tryptophan is pharmaceutically pure - every lot is tested to be free of Peak E and microbial contamination.
General: Product/Version Code
CODE 0263 V2
General Statements: All Other Content
SUPPORTS RELAXATION
General Statements: All Other Content
• Pharmaceutical Grade • Encourages Positive Mood • Promotes Restful Sleep*
Seals/Symbols
GMP QUALITY ASSURED
General Statements: All Other Content
L-Tryptophan is an essential amino acid important in human nutrition for the synthesis of melatonin and serotonin, hormones regulating mood and stress response. L-Tryptophan helps support relaxation, sleep, positive mood and immune function.* As an essential amino acid, it is not synthesized by the body and must be obtained from the diet.
General Statements: All Other Content
For more product information visit www.nowfoods.com/0263
General Statements: All Other Content
This product is sold by weight not volume.
Brand IP Statement(s) re: (c), (TM), (SM)
NOW(R) L-Tryptophan is Pharmaceutical Grade.
General Statements: All Other Content
Please Recycle.
Manufacturer & Distributor
Distributor
NOW FOODS
395 S. Glen Ellyn Rd., Bloomingdale, IL, 60108, USA
Market Reference
L- Tryptophan Powder
Vitacost.com4.5(161)$22.03NOW Foods L- Tryptophan Powder
NOW$35.99Now Foods, L-Tryptophan, Powder, 2 oz (57 g)
Silkrute$115.35NOW Foods L- Tryptophan Relaxation Support Capsules
iHerb4.6(4100)$13.46Now Foods L-Tryptophan 500 mg
Target4.6(5600)$26.99NOW Foods L- Tryptophan Double Strength 1000 mg 60 Tablets
Walmart - Highland Health Foods4.6(1400)$18.25L- Tryptophan Supplement Powder
Walmart - BulkSupplements.com4.9(119)$20.97L-Tryptophan Powder
Herbadiet$12.99
Where to Buy Locally
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Musclesupplement | Fitness Shop Dortmund City
4.8 (131)Vitamin & supplements store
Brückstraße 20-26, 44135 Dortmund
Supplements - Dortmund Sportnahrung Fitness und Bodybuilding Shop
4.5 (21)Vitamin & supplements store
Lange Str. 54, 44137 Dortmund-Innenstadt-West
BioTechUSA Thier-Galerie Dortmund
3.3 (15)Vitamin & supplements store
Westenhellweg 102 - 106, 44137 Dortmund
Fitshop Dortmund
4.9 (589)Exercise equipment store
Rheinlanddamm 101, 44139 Innenstadt-Ost
Vitanow Supplements
Vitamin & supplements store
Clarenberg 1, 44263 Dortmund
Nutrixxion
4.0 (1)Vitamin & supplements store
Leegeweg, 44143 Brackel
TQ THiNQ - smart protein ice-tea
4.9 (35)Sports nutrition store
Kirchhörder Str. 29, 44229 Hombruch
Body Attack Premium Store Bochum Ruhr-Park
4.5 (157)Sports nutrition store
Am Einkaufszentrum, 44791 Bochum Nord
Research & Studies
Role of tryptophan in health and disease: Systematic review of the anti-oxidant, anti-inflammation, and nutritional aspects of tryptophan and its metabolites
RB Singh - World Heart Journal, 2019 - search.proquest.com
… L-Tryptophan is an essential amino acid that is needed for the synthesis of proteins and … It is now becoming clear that GI tract serotonin plays an important role in the brain-gut-axis and …
201960 citationsAnalysis, nutrition, and health benefits of tryptophan
M Friedman - International Journal of Tryptophan Research, 2018 - journals.sagepub.com
… Here, tryptophan refers to l-tryptophan and the isomeric form produced during food … in the absence of l-tryptophan; ie, the mice must meet the entire need for l-tryptophan from the d-…
2018402 citationsA 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
… and negative mood in healthy adult populations. We have targeted healthy adult men and … Now she works as an academic officer at LLC Okutoeru from 2018. Her research interests …
2021109 citationsHealth benefits of tryptophan in children and adults
BN Nayak, HS Buttar - J. Pharm. Sci. Technol. Manage, 2015 - pharmacy.nmims.edu
… This mini-review provides a brief overview of the role of L-tryptophan … It's now becoming clear that serotonin plays an important … trials suggest that L-tryptophan supplementation may be …
201512 citationsWhy Moss Nutrition Is No Longer Selling L-Tryptophan Supplements (At Least For Now)-Part I.
J Moss - Nutritional Perspectives: Journal of the Council on …, 2015 - search.ebscohost.com
… These experiences led me to completely re-evaluate my stance on whether supplemental L-tryptophan might pose a significant health threat to a small but notable portion of the …
2015Tryptophan: current status and future trends for oral administration
LD Kaufman, RM Philen - Drug safety, 1993 - Springer
… the ingestion of tryptophan (L-tryptophan)-containing products (… as these pose enormous public health threats to potentially … to EMS that are now being reported incorrectly as EMS. …
199327 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2012-10-01. DSLD Label ID: 13615. 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.
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