PlainVitamins

5-HTP 5-Hydroxytryptophan 100 mg

by Natural Factors Stress-Relax · other (e.g. tea bag) · 120 time release caplets

  • On the market (NIH)
  • UPC 0 68958 02846 0
  • DSLD label 282149
  • Serving 1 caplet
  • 120 servings

5-HTP 5-Hydroxytryptophan 100 mg by Natural Factors Stress-Relax lists 2 ingredients, 2 with an amount per serving of 1 caplet, such as 70 mg of calcium and 100 mg of 5-htp. Its current label entered the NIH Dietary Supplement Label Database on January 23, 2023.

What is in 5-HTP 5-Hydroxytryptophan 100 mg?

Each row as the label prints it, per serving of 1 caplet. 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).

5-HTP 5-Hydroxytryptophan 100 mg: Supplement Facts rows against the market (DSLD label 282149, January 2026 release)
IngredientAmount% DVAmong products listing it
Calciumas Dicalcium Phosphate70 mg5%Calcium in 5-HTP 5-Hydroxytryptophan 100 mg against 17,831 products70 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg70 mg

65% of 17,831 products listing calcium give more (median 115 mg). Per day at the most servings: 210 mg.

5-Htpas Griffonia simplicifolia100 mg5-HTP in 5-HTP 5-Hydroxytryptophan 100 mg against 676 products100 mg per serving; the middle half of products list 50 mg to 100 mg, the median 100 mg.100 mg

18% of 676 products listing 5-HTP give more (median 100 mg). Per day at the most servings: 300 mg.

Source: NIH ODS Dietary Supplement Label Database, label 282149 (entered January 23, 2023), 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 2 to 3 servings 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?

6 products list the very same ingredients; the nearest amounts come first.

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 usage: 1 caplet 2-3 times per day with meals or as directed by a health professional. To minimize the risk of gastrointestinal side effects, slowly increase dose over a period of 2 weeks.
Warnings
Cautions: As with any supplement, consult your health professional before use if you are pregnant, breastfeeding, or trying to conceive, or if you are taking medication or supplements with serotonergic activity (specifically those with SSRIs, MOAs, or depressant/sedative affect), have a medical condition, or anticipate a surgery.
Keep out of the reach of children.
Sealed for your protection. Do not use if seal is broken.
Allergens and what it does not contain
Contains no artificial colors, preservatives, or sweeteners; no dairy, starch, sugar, wheat, gluten, yeast, soy, corn, egg, fish, shellfish, animal products, salt, tree nuts, or GMOs.
Storage
For freshness, store in a cool, dry place.

Source: label statements in DSLD label 282149.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Carbohydrate Gum, Glycerin, Magnesium Stearate.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): isura Non-GMO - Mass spec Documentation - Lab tested.

How many labels does 5-HTP 5-Hydroxytryptophan 100 mg have?

5 labels are on file under this name since June 1, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 282149 (current) Entered January 23, 2023 · on the market · 120 time release caplets · UPC 0 68958 02846 0
  2. Label 282121 Entered January 23, 2023 · on the market · 60 time release caplets · UPC 0 68958 02829 3
  3. Label 75949 Entered July 25, 2017 · off the market February 10, 2022 · 120 enteric coated caplets · UPC 0 68958 02846 0
  4. Label 75839 Entered July 25, 2017 · off the market February 10, 2022 · 60 enteric coated caplets · UPC 0 68958 02829 3
  5. Label 8891 Entered June 1, 2012 · off the market July 15, 2014 · 60 enteric coated caplets · UPC 0 68958 02829 3

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Natural Factors Canada (manufacturer). All Natural Factors Stress-Relax products.

Where next?