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
Not specified
Suggested Use
SUGGESTED USAGE: As a dietary supplement; take 1 tablet 1 to 3 times daily on an empty stomach; with final dose at bedtime; or as directed by your physician. Consider taking these other NOW(R) products: Inositol and Magnesium.
Market Reference
NOW Foods L- Tryptophan Double Strength 1000 mg 60 Tablets
Walmart - iHerb4.6(1400)$22.07Now Foods L-tryptophan 1000mg Tablets (60-Count)
Walmart - Fruitful Yield4.6(1400)$43.58Amazing Formulas L- Tryptophan 1000mg Tablets
Walmart - Vitaminshub4.7(315)$9.99LowestBest Naturals L-Tryptophan mg 60
Target4.7(74)$9.99LowestAmazing Formulas L- Tryptophan 1000 mg 120 Tablets
Amazing Nutrition4.7(315)$19.99NOW Foods L- Tryptophan Powder
HerbsDaily.com4.5(153)$17.71SuperSmart L- Tryptophan 1000mg per Day
SuperSmart USA4.6(69)$36.00Brieofood L- Tryptophan 1000mg per Serving 240 Capsules
Target$18.99
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.
GNC
4.0 (32)Vitamin & supplements store
168 River Square Plaza, Hueytown, AL 35023
The Vitamin Shoppe
4.4 (167)Vitamin & supplements store
1713 Montgomery Hwy Ste 101, Birmingham, AL 35244
GNC
4.1 (39)Vitamin & supplements store
4933 Promenade Pkwy STE 129, Bessemer, AL 35022
Research & Studies
Calcium-sensing receptor regulation of gastrointestinal hormone secretion
J Anjom-Shoae, S Veedfald, AD Conigrave… - Endocrine …, 2026 - academic.oup.com
… It is now known that the receptor undergoes repetitive … 500 or 1000 mg Ca2+ (as a solution of CaCl2), in both healthy lean … of L-tryptophan on gut hormones and energy intake in healthy …
2026Tolerable upper intake level for individual amino acids in humans: a narrative review of recent clinical studies
R Elango - Advances in Nutrition, 2023 - Elsevier
… supplements because of various perceived and real health benefits. However, currently, there are no recommendations set by national health … The data suggest that in relatively healthy …
202364 citationsOver-the-counter sleep aid medications and insomnia
S Randall, TA Roehrs, T Roth - Primary Psychiatry, 2008 - academia.edu
… of untreated insomnia is now well documented. Beyond the … health services took valerian for 14 days to supplement their … insomnia, and L-tryptophan supplements have been used to …
200818 citationsCheating Death: The New Science of Living Longer and Better
R McClain - 2023 - books.google.com
… source for information regarding medical treatments for anti-… information about every medication, supplement, procedure, and … Now we give her an infusion of stem cells once or twice …
20232 citationsA Momentary Lapse of Reason: Living with L-tryptophan Induced EMS and the Hidden Dangers of Genetic Modification of Our Foods
H Behr - 2011 - books.google.com
… L-Tryptophan has destroyed my health, my relationships, … presumed problems with L-Tryptophan supplements in general … I suggest you get angry now, right now, get very angry. Take …
2011Dietary supplements aimed at enhancing performance: efficacy and safety considerations.
TJ Maher - The Role of Protein and Amino Acids in Sustaining …, 1999 - books.google.com
… that resulted from the use of Ltryptophan, the US Food and … issue of long-term health and protein quality today, but one of … particularly because iron supplementation is now being carried …
19991 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2013-10-25. DSLD Label ID: 26837. 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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