PureDefense with NAC
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 |
|---|---|
| Vitamin C289 systematic reviews · 808 randomised trials | 250 mg |
| Vitamin D1526 systematic reviews · 3105 randomised trials | 25 mcg |
| Zinc469 systematic reviews · 1315 randomised trials | 7.5 mg |
| N-Acetyl-L-Cysteine1 systematic review · 10 randomised trials | 450 mg |
| EpiCor dried Yeast Fermentate Complex | 250 mg |
| European Elder (Elderberry) (Sambucus nigra) extract | 200 mg |
| Quercetin42 systematic reviews · 132 randomised trials | 25 mg |
Certifications & Testing
Other Ingredients
Vegetarian Capsule, Ascorbyl Palmitate
Recommended Use
Recommendations: As a dietary supplement, take 2 capsules, twice daily, with meals, or as directed by a health professional.
Warnings
Warning: If you are pregnant or lactating, have any health condition or are taking any medication, consult your health professional before use. Keep out of the reach of children. This product was sealed for your protection. Do not use if the box is open or blister seals are damaged.
Frequently Asked Questions
What is Pure Encapsulations PureDefense with NAC's Formulate score?
Pure Encapsulations PureDefense with NAC scores 87 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 Pure Encapsulations PureDefense with NAC worth it?
Pure Encapsulations PureDefense with NAC scores 87/100 (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 Pure Encapsulations PureDefense with NAC?
Each serving contains Vitamin C (250 mg), Vitamin D (25 mcg), Zinc (7.5 mg), N-Acetyl-L-Cysteine (450 mg), and more. Serving size: 2 Capsule(s). 10 servings per container.
How do I take puredefense with nac?
Recommendations: As a dietary supplement, take 2 capsules, twice daily, with meals, or as directed by a health professional.
Who makes PureDefense with NAC?
PureDefense with NAC is made by Pure Encapsulations. See Formulate's full grade and product lineup for Pure Encapsulations on its brand page.
Is Pure Encapsulations PureDefense with NAC third-party tested?
Pure Encapsulations lists the following certifications and testing for this product: Dairy-Free, Gluten-Free, Non-GMO, Soy-Free, Vegan, Vegetarian.
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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.