Net Contents
60 Tablet(s)
Serving Size
1 Tablet(s)
Servings Per Container
Not specified
Supplement Form
Tablet or Pill
Bar Code (UPC/SKU)
7 33739 00169 6
Product Version
CODE 0169 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: 1 Tablet(s) · 1–3 per day
| Ingredient | Amount Per Serving | |
|---|---|---|
| L-Tryptophan | 1 g | — |
Not Present
Other Ingredients
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
SUGGESTED USAGE: As a dietary supplement, take 1 tablet 1 to 3 times daily on an empty stomach or as directed by your physician. Best used at bedtime. Consider taking these other NOW(R) products: Inositol and Magnesium.
Warnings & Precautions
Precautions re: Allergies
Produced in a GMP facility that processes other ingredients containing these allergens.
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: All Other
Do Not Eat Freshness Packet. Keep in Bottle.
Storage
Storage
Store in a cool, dry place after opening.
Formulation
Formulation re: Does NOT Contain
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.
Formulation re: Vegetarian/Vegan
Vegetarian/Vegan
FDA Statements
FDA Statement of Identity
A 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
Brand IP Statement(s) re: (c), (TM), (SM)
NOW(R) L-Tryptophan is Pharmaceutical Grade. NOW(R) Double Strength L-Tryptophan has twice the L-Tryptophan (1000 mg per tablet) as in our regular strength product (500 mg per capsule).
General Statements: All Other Content
Please Recycle.
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.
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 Statements: All Other Content
TABLET SIZE Made in the USA
General Statements: All Other Content
SUPPORTS RELAXATION
General Statements: All Other Content
• Fast-Acting Disintegration • Encourages Positive Mood • Promotes Restful Sleep* PHARMACEUTICAL GRADE
Seals/Symbols
GMP QUALITY ASSURED
General Statements: All Other Content
For more product information visit www.nowfoods.com/0169
General: Product/Version Code
CODE 0169 V2
Manufacturer & Distributor
Manufacturer
NOW FOODS
395 S. Glen Ellyn Rd., Bloomingdale, IL, 60108, USA
Market Reference
NOW Foods L- Tryptophan Double Strength 1000 mg 60 Tablets
Swanson Health Products4.6(1400)$23.23
Now Foods L-tryptophan 1000mg Tablets (60-Count)
Walmart - Fruitful Yield4.6(1400)$43.58
NOW Foods L- Tryptophan Powder
Target4.5(153)$23.99
Best Naturals L-Tryptophan mg 60
Target4.7(74)$9.99Lowest
Horbaach L Tryptophan 1500mg 180 Capsules
Walmart - Carlyle Nutritionals, LLC4.8(30)$19.69
NOW L-Tryptophan 500 mg 60 Vegicaps
lazyacres.com4.6(4600)$23.99
(2 pack) Now Foods L-Tryptophan 2 oz Powder, Size: 2.30
Walmart - Fruitful Yield$41.84
Vitamatic L- Tryptophan 1000mg 120 Tablets
Target4.7(331)$14.99
Where to Buy Locally
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The Vitamin Shoppe
4.4 (122)Vitamin & supplements store
8929 Avenue D C1, Brooklyn, NY 11236
GNC
4.3 (101)Vitamin & supplements store
32 Graham Ave, Brooklyn, NY 11206
The Vitamin Shoppe
4.3 (183)Vitamin & supplements store
12 4th Ave, Brooklyn, NY 11217
GNC
4.5 (53)Vitamin & supplements store
2155 A Ralph Ave, Brooklyn, NY 11234
The Vitamin Shoppe
3.9 (84)Vitamin & supplements store
32 Court St, Brooklyn, NY 11201
GNC
3.6 (113)Vitamin & supplements store
1234 Fulton St, Brooklyn, NY 11216
GNC
4.2 (118)Vitamin & supplements store
56-18 Myrtle Ave, Ridgewood, NY 11385
The Vitamin Shoppe
4.3 (142)Vitamin & supplements store
1326 Kings Hwy, Brooklyn, NY 11229
Research & Studies
Calcium-sensing receptor regulation of gastrointestinal hormone secretion
J Anjom-Shoae, S Veedfald, AD Conigrave… - Endocrine …, 2026 - academic.oup.com
… cations (9), and it is now understood to be critical to Ca2+ … or 1000 mg Ca2+ (as a solution of CaCl2), in both healthy lean … L-tryptophan on gut hormones and energy intake in healthy …
2026Regulatory toxicity and safety profiling of N-acetyl-L-tryptophan with special emphasis on genotoxicity and male reproductive toxicity via intramuscular route of …
R Kumar, N Gaurav, V Kumar… - Drug and Chemical …, 2026 - Taylor & Francis
2026Quantitative studies on human urinary metabolites of tryptophan as affected by isoniazid and deoxypyridoxine
JM Price, RR Brown, FC Larson - The Journal of Clinical Investigation, 1957 - jci.org
… Although it is now known that kynurenic acid and xanthurenic acid cannot be regarded as … adequate to account for the majority of supplements of L-tryptophan. The results of the present …
1957101 citationsLosebig: An effective nutritional suplement to impove weight loss and mental health
D Grigorakis, K Voutsadakis, G Kapoli… - Dialogues in Clinical …, 2025 - obrela-journal.gr
… Metformin (dimethylbiguanide) is now considered the most … The doses ranged from 50 to 1,000 mg per day, administered for 2 to 6 … L-Tryptophan: Basic metabolic functions, behavioral …
20253-Hydroxyanthranilic acid, one of L-tryptophan metabolites, inhibits monocyte chemoattractant protein-1 secretion and vascular cell adhesion molecule-1 expression …
HO Pae, GS Oh, BS Lee, JS Rim, YM Kim, HT Chung - Atherosclerosis, 2006 - Elsevier
… The in vivo transformation of l-tryptophan to kynurenine is … Apart from low level expression in healthy individuals, IDO expression is … We now asked whether HA would also induce HO-1 …
2006109 citationsSurowce naturalne mające znaczenie w profilaktyce i wspomagające leczenie depresji
B Muszyńska, M Łojewski, J Rojowski, W Opoka… - 2015 - ruj.uj.edu.pl
… of health problems, and also in case of serious diseases such as depression. Depression (affective disorder) now affects … L-Tryptophan, 5-hydroxy-L-tryptophan are present in the largest …
201511 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: 13500. 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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