BioStacks
Carlyle

NAC N-Acetyl Cysteine

2 Capsules · 40 servings · $0.20/serving

iHerbAmazon

Best for

Liver

Ingredients (3)

N-Acetyl Cysteine (NAC)

100%

Dose

1000 mg

Target

600–1800 mg

Form

—

Molybdenum

100%

Dose

60 mcg

Target

45–75 mcg

Form

Standard

Selenium

50%

Dose

50 mcg

Target

100–200 mcg

Form

Premium

Other Ingredients (4)

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.

Rice FlourFiller

Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.

Rice FiberFiller

Insoluble dietary fiber isolated from rice, used as a plant-based bulking agent and flow/anti-caking aid.

Capsule ShellCapsule

Generic capsule shell where the label does not specify the material. Common materials are hypromellose (HPMC) for vegetarian capsules and gelatin for traditional capsules — both are GRAS-listed and safe. Fish gelatin and pullulan variants also exist.

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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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