L-Tryptophannone
Amino Acids & ProteinBrand: California Natural
Functions
Net Contents
30 Capsule(s)
Serving Size
1–2 Capsule(s)
Servings Per Container
30
Supplement Form
Capsule
Bar Code (UPC/SKU)
0 85001 51313 1
Product Version
Not Present
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
Contains
- Milk
- Soy
- Gluten
Free From
- Wheat
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: 1–2 Capsule(s) · 1–3 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: For adults, take 1 to 2 capsules before bed time or take 1 to 2 capsules up to 3 times daily as needed or as directed by your health care professional. May be taken on an empty stomach.
Warnings & Precautions
Precautions re: Pregnant or Nursing or Prescription Medications
Warning: Do not take this product if you are on any medications, especially antidepressants, or if you are pregnant or breast feeding, consult your qualified health care professional. Do not take this product if you are taking any SSRIs (selective serotonin reuptake inhibitors).
Precautions re: Children
Keep out of the reach of children.
Storage
Storage
Store in a cool and dry place.
Formulation
Formulation re: Other
Manufactured in a certified GMP facility.
Formulation re: Does NOT Contain
This product contains no wheat, gluten, yeast, soy, salt, sugar, milk, artificial flavors and color and no preservatives.
Formulation re: Other
Supports restful sleep Encourages positive mood
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
Seals/Symbols
Made in the U.S.A.
General Statements: All Other Content
500 milligrams
Manufacturer & Distributor
Distributor
California Natural Vitamin Labs
Chatsworth, CA, 91311
1-888-383-1212
Market Reference
California Natural L-Tryptophan
eBay - vitashopsmart$18.99NOW Foods L- Tryptophan Relaxation Support Capsules
Vitacost.com4.6(4100)$13.46L-Tryptophan Pure Encapsulations
Pure Prescriptions4.6(42)$72.50Best Naturals L-Tryptophan mg 60
Best Naturals4.5(135)$10.99Source Naturals L Tryptophan
Smallflower.com4.6(1100)$9.58Nutricost L- Tryptophan Capsules
Target4.1(231)$15.95Now Foods L-Tryptophan 500 mg
NOW4.6(5600)$21.99CFN L- Tryptophan 60 Cap.
Naturitas4.4(9)$23.01
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.
Ancient Formulas, Inc
5.0 (9)Vitamin & supplements store
1235 Santa Fe S, Wichita, KS 67211
Supplement World
4.9 (142)Vitamin & supplements store
1535 s Oliver, Wichita, KS 67218
Supplement Giant
4.8 (192)Vitamin & supplements store
2260 N Rock Rd, Wichita, KS 67226
Protein Pantry
4.9 (14)Weight loss service
Air Capital Flight Line, 4174 S Oliver St Building 174 - H, Wichita, KS 67210
Prime Nutrition
3.7 (3)Vitamin & supplements store
7130 W Maple St Ste 240, Wichita, KS 67209
GNC
3.8 (43)Vitamin & supplements store
2441 N Maize Rd Ste 2505, Wichita, KS 67205
Supplement World
4.9 (353)Vitamin & supplements store
552 N Ridge Rd, Wichita, KS 67212
Supplement Giant
4.8 (133)Vitamin & supplements store
2556 N Maize Rd #110, Wichita, KS 67205
Research & Studies
The 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
… of natural health products, medical foods, infant formulas, follow-up formulas, foods for special medical uses, foods for specified health … L-tryptophan supplementation does not improve …
201622 citationsOral tryptophan activates duodenal aryl hydrocarbon receptor in healthy subjects: a crossover randomized controlled trial
GH Rueda, N Causada-Calo… - American Journal …, 2024 - journals.physiology.org
… (Thermo Fisher Scientific, San Jose, CA) by integrating selected product ion chromatographic … In humans, oral l-tryptophan supplementation at the doses used in this study was safe and …
202430 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 citationsEffects and side effects associated with the non-nutritional use of tryptophan by humans
JD Fernstrom - The Journal of nutrition, 2012 - academic.oup.com
… editorial services provided for this supplement publication. The supplement is the responsibility of … Effect of L-tryptophan on brain serotonin metabolism in depressed patients. Arch Gen …
2012143 citationsL-tryptophan in neuropsychiatry disorders: a review
R Sandyk - International journal of neuroscience, 1992 - Taylor & Francis
… Therefore, Ltryptophan supplementation has been used in … for use in conjunction with L-tryptophan to increase brain … widespread and serious public health problem and levies a …
1992197 citationsTryptophan supplementation and serotonin function: genetic variations in behavioural effects
EL Gibson - Proceedings of the Nutrition Society, 2018 - cambridge.org
… effects of supplementation with the serotonin precursor amino acid L-tryptophan (TRP), on … as having important implications for health, including neuropsychiatric conditions such as …
2018108 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2021-05-22. DSLD Label ID: 247760. 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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