Net Contents
60 Capsule(s)
Serving Size
1 Capsule(s)
Servings Per Container
Not specified
Supplement Form
Capsule
Bar Code (UPC/SKU)
0 87614 11502 3
Product Version
SW1502 Rev 1 09 24 18
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.
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 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
Suggested use: As a dietary supplement, take one capsule with water 30–60 minutes before sleeping.
Warnings & Precautions
Precautions re: All Other
Warning: For adults only.
Precautions re: Pregnant or Nursing or Prescription Medications
Do not take this product if you are pregnant or nursing or taking prescription antidepressants. Consult your physician before using this or any product if you are taking medication or have a medical condition.
Precautions re: Children
Keep out of reach of children.
Precautions re: All Other
Do not use if seal is broken.
Storage
Storage
Store in a cool, dry place.
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
Dietary Supplement
Other Label Statements
General Statements: All Other Content
Encourages healthy sleep patterns Helps regulate the body's circadian rhythm Supports healthy serotonin levels Science-Backed Quality Since 1969
General Statements: All Other Content
Sleep support 500 mg per capsule
General: Product/Version Code
SW1502 Rev 1 09 24 18
Manufacturer & Distributor
Distributor
Swanson Health Products
Fargo, ND, 58104, USA
1-800-437-4148
Market Reference
Swanson L- Tryptophan 500 mg 90 Veggie Capsules
Swanson Health Products4.7(2000)$9.58NOW Foods L- Tryptophan Relaxation Support Capsules
Swanson Health Products4.6(4100)$15.49Now Foods L-Tryptophan 500 mg
Swanson Health Products4.6(5600)$23.83Nutricost L- Tryptophan Capsules
Target4.1(231)$15.95Source Naturals L Tryptophan
Swanson Health Products4.6(1100)$21.59Doctor's Best L- Tryptophan 500 mg 90 Veggie Caps
Swanson Health Products4.7(642)$20.99L- Tryptophan
SFI Health$43.99Best Naturals L- Tryptophan 500 Mg 120 Capsules
Target$26.95
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.
The Vitamin Shoppe
4.5 (126)Vitamin & supplements store
1255 Raritan Rd #280, Clark, NJ 07066
Underground Nutrition Garwood
5.0 (163)Vitamin & supplements store
331 South Ave D-E, Garwood, NJ 07027
GNC
4.6 (48)Vitamin & supplements store
711 E 1st Ave, Roselle, NJ 07203
Herbs for Life
5.0 (35)Herb shop
723 W Grand Ave, Rahway, NJ 07065
PRO ELITE NUTRITION
4.9 (37)Vitamin & supplements store
3422 1912 Springfield Ave, Maplewood, NJ 07040
HiLife Vitamins
4.6 (169)Vitamin & supplements store
48 River Rd, Chatham, NJ 07928
GNC
4.1 (22)Vitamin & supplements store
685 W Edgar Rd, Linden, NJ 07036
The Vitamin Shoppe
4.5 (161)Vitamin & supplements store
185 US-1 S, Metuchen, NJ 08840
Research & Studies
Tryptophan prevents the development of non-alcoholic fatty liver disease
R Yanko, M Levashov, OG Chaka, V Nosar… - Diabetes, Metabolic …, 2023 - Taylor & Francis
… Despite the essential role of tryptophan in maintaining health… Our results show that L-tryptophan attenuates … -6-phosphatase was determined by the Swanson method, measuring the …
202320 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
… This systematic review includes 11 RCTs that examined the effects of TRP intake on positive and negative mood in healthy adult populations. We have targeted healthy adult men and …
2021109 citationsCharacterisation of an acute anorexigenic action of l-tryptophan: a link with neural mechanisms regulating appetite
SN Gartner - 2018 - researchcommons.waikato.ac.nz
… TRP supplementation in healthy participants with no sleep problems caused a mild hypnotic … A range of oral doses seem effective in humans including 500 mg or 1 g mixed with 30 mg …
2018Supplementing 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
… intake of the essential amino acid L-tryptophan (L-Trp) have … Indeed, pellagra remains a public health problem in many … the nutritional requirements for L-Trp (300 mg/d in adults) (12) …
201379 citationsAnalysis, nutrition, and health benefits of tryptophan
M Friedman - International Journal of Tryptophan Research, 2018 - journals.sagepub.com
… of some of the reported health-promoting aspects of … Here, tryptophan refers to l-tryptophan and the isomeric form … the dietary supplementation of tryptophan to healthy adults (n …
2018402 citationsA heretofore undisclosed crux of eosinophilia-myalgia syndrome: compromised histamine degradation
MJ Smith, RH Garrett - Inflammation Research, 2005 - Springer
… import alert in November 1989 for LTCDS in which L-tryptophan is the sole or major component [… [73] Swanson DR. A second example of mutually isolated medical literatures related by …
200543 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2019-05-28. DSLD Label ID: 203138. 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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