L-Tryptophan 500 mg
by Nutricost · capsule · 120 capsules
- On the market (NIH)
- UPC 7 02669 93307 0
- DSLD label 306325
- Serving 1 capsule
- 120 servings
L-Tryptophan 500 mg by Nutricost lists 2 ingredients, 2 with an amount per serving of 1 capsule, such as 500 mg of L-tryptophan and 5 mg of bioperine. Its current label entered the NIH Dietary Supplement Label Database on October 24, 2024.
What is in L-Tryptophan 500 mg?
Each row as the label prints it, per serving of 1 capsule. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| L-Tryptophan | 500 mg | Higher than 76% of 605 products listing tryptophan (median 123 mg). | |
| Bioperineas Black Pepper Fruit ExtractMinimum 95% Piperine | 5 mg | 33% of 2,363 products listing black pepper give more (median 5 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 306325 (entered October 24, 2024), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.
Is that a lot?
Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.
The NIH database records one serving a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.
The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.
Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.
Which products have the closest formulas?
The products whose ingredient lists overlap most with L-Tryptophan 500 mg's, rare ingredients counting for more.
- L-Tryptophan 1000 mgNOW · off the market 1 shared, 58% alike
- L-TryptophanThorne Research · off the market 1 shared, 58% alike
- L-TryptophanPureBulk.com 1 shared, 58% alike
- Best L-Tryptophan PowderDoctor's Best 1 shared, 58% alike
- L-TryptophanIndiana Botanic Gardens 1 shared, 58% alike
- L-TryptophanVitamin Research Products 1 shared, 58% alike
Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.
What does the label say about taking it?
Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.
- Directions
- Suggested use: As a dietary supplement, take 1 capsule daily with 8-12oz of water or as directed by your healthcare professional.
- Warnings
- Warning: For healthy individuals 18 years and older. Keep out of reach of children.
- Consult a healthcare professional prior to use if you are pregnant or nursing, taking medication, or have a medical condition.
- Do not use if safety seal is broken or missing.
- Allergens and what it does not contain
- Non-GMO product
- Storage
- Note: Store in a cool, dry place.
Source: label statements in DSLD label 306325.
What else is on the label?
Other ingredients: Rice Flour, Gelatin, Silicon Dioxide, Magnesium Stearate.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Nutricost Quality Guaranteed Third Party Tested GMP Compliant Facility.
How many labels does L-Tryptophan 500 mg have?
4 labels are on file under this name since August 22, 2017: other sizes, label designs and reformulations. The current one leads this page.
- Label 306325 (current) Entered October 24, 2024 · on the market · 120 capsules · UPC 7 02669 93307 0
- Label 269721 Entered July 21, 2022 · off the market December 29, 2022 · 120 capsules · UPC 7 02669 93307 0
- Label 223418 Entered June 24, 2020 · off the market December 20, 2021 · 120 capsules · UPC 7 02669 93307 0
- Label 77159 Entered August 22, 2017 · off the market April 22, 2020 · 120 capsules · UPC 7 02669 93307 0
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Nutricost (distributor), Vineyard, UT. All Nutricost products.