Pure Encapsulations NAC, 900 mg supplement bottle
Pure Encapsulations

NAC, 900 mg Review

What We Researched
1 active ingredient analyzed · 2 inactive ingredients decoded · 4 brand certifications checked · Page generated: Sep 2026
100
Product Score Excellent
81
Brand Score Good

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
N-Acetyl L-Cysteine (free form) 900 mg *
Bioavailability Excellent

Absorption Rating

  • N-Acetyl L-Cysteine (free form) Good
Other Ingredients Excellent

Fillers & Additives

  • Vegetarian Capsule (Cellulose, Water)
  • Ascorbyl Palmitate
Efficacy Excellent

Dosage Analysis

  • N-Acetyl L-Cysteine (free form) 900 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
N-Acetyl L-Cysteine (free form) 900 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Vegetarian Capsule (Cellulose, Water) Safe

It is used to encapsulate supplement ingredients.

Ascorbyl Palmitate Safe

Prevents oxidation and extends shelf life of oil-based supplements.

Brand Trust Report
Pure Encapsulations

Founded 1991 · Sudbury, Massachusetts, United States · 228 products · pureencapsulations.com

Certifications

4 certifications
Fda Gmp Inspections Source available Primary evidence
Nsf Gmp Source available Primary evidence
NSF Certified Supporting evidence unavailable
Gluten-Free Certified Supporting evidence unavailable

Transparency

4 claims
Third Party Testing Claim — Verified Evidence available Evidence
Testing Lab Disclosure — Verified Evidence available Evidence
Contains Proprietary Blend — True Brand claim; evidence unavailable
Related Supplements
Frequently Asked Questions
Is Pure Encapsulations NAC, 900 mg a good supplement?

Pure Encapsulations NAC, 900 mg received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients with 240 servings per container. All 2 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Pure Encapsulations, holds a brand trust score of 81/100.

What are the ingredients in Pure Encapsulations NAC, 900 mg?

Pure Encapsulations NAC, 900 mg contains 1 active ingredients: N-Acetyl L-Cysteine (free form) (900 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Pure Encapsulations NAC, 900 mg safe to take?

GoodSupp reviewed the inactive-ingredient data available for Pure Encapsulations NAC, 900 mg. All 2 inactive ingredients — including capsule materials, fillers, and binders — are currently classified as safe in GoodSupp's ingredient reference data. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Pure Encapsulations a trustworthy supplement brand?

Pure Encapsulations receives a brand trust score of 81/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1991 and headquartered in Sudbury, Massachusetts, United States, the company offers 228 products in their lineup.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records — read our methodology. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.