BioStacks
SuperiorLabs

NAC

2 Capsules · 75 servings · $0.29/serving

iHerbAmazon

Best for

LiverLongevity

Ingredients (2)

N-Acetyl Cysteine

100%

Dose

1200 mg

Target

600–1800 mg

Form

—

Selenium

100%

Dose

100 mcg

Target

100–200 mcg

Form

Premium

Other Ingredients (2)

Rice ExtractFiller

Rice-based ingredients carry risk of inorganic arsenic contamination. Vague labeling — 'rice extract' does not specify what is extracted or standardized. Used as a cheap filler with no supplemental benefit.

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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