NAC
Scored by the Formulate Research Team · Last reviewed July 2026
Overview: Thorne NAC
A potent antioxidant that supports comprehensive wellness, including liver, respiratory, kidney, and immune health* N-Acetylcysteine (NAC) is an amino acid that provides significant benefits by increasing the body’s production of glutathione and neutralizing free radicals to support detoxification.*
Score Breakdown
Formulate scores every product across six weighted dimensions. Each dimension is graded independently — hover or tap to see what drove each component.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| N-Acetyl-L-Cysteine1 systematic review · 10 randomised trials | 1500 mg |
Certifications & Testing
Other Ingredients
Hypromellose (derived from cellulose) capsule, Leucine, Silicon Dioxide
Recommended Use
Take 1 capsule two to three times daily or as recommended by your health-care practitioner.
Warnings
ALLERGY WARNING This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients. PREGNANCY If pregnant, consult your health-care practitioner before using this product. INTERACTIONS There are no known adverse interactions or contraindications at publication date.
Frequently Asked Questions
What is Thorne NAC's Formulate score?
Thorne NAC scores 86 out of 100 (grade A-) on Formulate's ingredient-level rubric, which weighs evidence quality, dose accuracy, bioavailability, transparency, safety, and manufacturing practices.
Is Thorne NAC worth it?
Thorne NAC scores 86/100 (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 Thorne NAC?
Each serving contains N-Acetyl-L-Cysteine (1500 mg). Serving size: 1 Capsule. 180 servings per container.
How do I take nac?
Take 1 capsule two to three times daily or as recommended by your health-care practitioner.
Who makes NAC?
NAC is made by Thorne. See Formulate's full grade and product lineup for Thorne on its brand page.
Is Thorne NAC third-party tested?
Thorne lists the following certifications and testing for this product: Gluten Free, Soy Free, Dairy Free, Natural Flavors, Natural Colors, Made in USA, Third-Party Contents Certified, Thorne Verified, GMP Certified.
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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.