BioStacks
NOW

NAC 1,000 mg Quercetin 500 mg & Zinc 15 mg

2 Capsules · 45 servings · $0.89/serving

82 / 100Excellent

Score Breakdown

Formulation
82
Safety
100
Final score
82/100

Ingredients (3)

Zinc

100%

Dose

15 mg

Target

15–30 mg

Form

Premium

N-Acetyl Cysteine

100%

Dose

1000 mg

Target

600–1800 mg

Form

Quercetin

100%

Dose

500 mg

Target

500–1000 mg

Form

Other Ingredients (3)

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Ascorbyl PalmitateAntioxidant

Fat-soluble form of vitamin C used as preservative

HypromelloseCapsule

Plant-derived capsule material from cellulose

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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.