BioStacks
Solgar

L-Cysteine 500 mg Vegetable Capsules

1 Capsule · 90 servings · $0.19/serving

iHerbAmazon
48 / 100Average

Score Breakdown

Formulation
48
Safety
100
Final score
48/100

Ingredients (1)

L-Cysteine Hydrochloride

83%

Dose

500 mg

Target

600–1800 mg

Form

Premium

Other Ingredients (4)

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Magnesium StearateLubricant

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

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

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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.

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