NAC Quercetin & Zinc
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| Zinc469 systematic reviews · 1315 randomised trials | 15 mg |
| N-Acetyl Cysteine | 1000 mg |
| Quercetin42 systematic reviews · 132 randomised trials | 500 mg |
Certifications & Testing
Other Ingredients
Hypromellose, Ascorbyl Palmitate, Silicon Dioxide, Citric Acid
Recommended Use
Suggested usage: Take 2 capsules daily.
Warnings
Caution: For adults only. Quercetin may interact with a variety of medications; consult physician before using this product if taking prescription drugs (especially nitroglycerin). Consult physician if pregnant/nursing or have a medical condition. Keep out of reach of children. Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. Produced in a GMP f
Frequently Asked Questions
What is NOW Foods NAC Quercetin & Zinc's Formulate score?
NOW Foods NAC Quercetin & Zinc scores 84 out of 100 (grade A-) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is NOW Foods NAC Quercetin & Zinc worth it?
NOW Foods NAC Quercetin & Zinc scores 84/100 (grade A-). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in NOW Foods NAC Quercetin & Zinc?
Each serving contains Zinc (15 mg), N-Acetyl Cysteine (1000 mg), Quercetin (500 mg). Serving size: 2 Veg Capsule(s). 45 servings per container.
How do I take nac quercetin & zinc?
Suggested usage: Take 2 capsules daily.
Who makes NAC Quercetin & Zinc?
NAC Quercetin & Zinc is made by NOW Foods. See Formulate's full grade and product lineup for NOW Foods on its brand page.
Is NOW Foods NAC Quercetin & Zinc third-party tested?
NOW Foods lists the following certifications and testing for this product: Gluten-Free, Dairy-Free.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.