Protein · Supplement ingredient
Keratin
Keratin is listed on 54 U.S. supplement product labels in the NIH DSLD, #1,045 of 4,614 by label frequency.
- 54
- Products
- #1,045 of 4,614
- By frequency
How common is Keratin?
Number of supplement labels listing Keratin vs nearby protein ingredients
- Gelatin
Gelatin
24,347 products
- Protein (unspecified) 6,961
Protein (unspecified)
6,961 products
- Whey Protein 3,133
Whey Protein
3,133 products
- Protein 2,949
Protein
2,949 products
- Collagen 1,062
Collagen
1,062 products
- Keratin 54
Keratin
54 products
Products containing Keratin
Nearby Ingredients in Protein
Other ingredients in the Protein category cataloged in the NIH DSLD. Useful for comparing how common different nutrients are across the US supplement market.
Nationwide ingredients with similar DSLD presence
Two peer sets for Keratin: closest on total DSLD label listings (54 here) and closest on distinct brands that list it (39 here). Peers exclude the same DSLD category, and rows stay link-disjoint so each axis is a distinct neighborhood.
Similar label frequency
Nearest other ingredients by distinct DSLD product labels (floored at ≥50), outside this category.
Frequently asked about Keratin
How many supplement products contain Keratin? ▼
Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD). Regulatory reference: Source: Dietary Supplement Health and Education Act (DSHEA), 1994, 21 U.S.C. § 321(ff).
Disclaimer, Not Medical Advice: Information on this page is based on manufacturer-declared label data and is provided for educational and reference purposes only. It does not constitute medical, nutritional, or health advice. Consult a licensed healthcare provider before starting, stopping, or combining any supplement, especially if you are pregnant, nursing, take prescription medication, or have a medical condition.
Read our methodology , how this data is sourced, computed, and verified.
Every figure on PlainVitamins is rendered directly from the NIH Dietary Supplement Label Database (DSLD), no number is typed in by an editor. Ingredient figures are computed directly from the NIH DSLD, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.