BioStacks
Nutricost

Keratin

2 Capsules · 60 servings · $0.25/serving

27 / 100Poor

Best for

Score Breakdown

Formulation
27
Safety
100
Final score
27/100

Ingredients (1)

Hydrolyzed Keratin Peptide

100%

Dose

500 mg

Target

250–500 mg

Form

Budget

Other Ingredients (5)

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

StarchBinder

Carbohydrate polymer used as a binder, filler, and disintegrant in tablets and capsules

Calcium CarbonateBuffer

Common calcium salt used as a buffering agent, filler, or mineral fortification in supplements

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.