NAC (N-Acetyl Cysteine) — Capsules, 90 Count — High-Potency 1000 mg (per 2-capsule serving) — Antioxidant & Detox Support*
LifeSource Vitamins NAC provides a clinically used precursor to glutathione to support antioxidant defenses, detox pathways, and everyday respiratory wellness. Produced in FDA-registered, GMP-certified facilities and 3rd-party tested for purity, potency, and label accuracy.*
Research-Driven & Verified Product.
Explore the clinical research, ingredient science, and global evidence supporting this product below.
Research Promise:
At LifeSource Vitamins, our commitment is rooted in research and results. Every benefit below is supported by human clinical studies indexed in the National Institutes of Health (NIH) via PubMed, with full texts available in the National Library of Medicine (NLM) PubMed Central (PMC) when available. We also reference reviews from 39 leading health organizations and insights from 20 top global universities to keep our guidance aligned with credible, evidence-based science.* Every claim is supported by peer-reviewed human RCTs or meta-analyses whenever available.
Clinically Studied Benefits
✓ Glutathione & antioxidant support* — NAC donates cysteine to support glutathione homeostasis and redox balance.
NIH/PubMed — Atkuri K, 2007
✓ Respiratory/mucolytic action* — Mucolytics including NAC can reduce sputum viscosity and support airway clearance (benefits vary by study era/design).
NIH/PubMed — Poole P, 2019 (Cochrane Review)
✓ Detox pathway precursor* — Clinical reviews describe NAC’s role in glutathione-dependent conjugation and redox signaling.
NIH/PMC — dos Santos Tenório MC, 2021
✓ Exercise performance/recovery* — Human trials report increased time-to-fatigue and changes in redox markers with NAC.
NIH/PubMed — Medved I, 2004
NIH/PMC — Fernández-Lázaro D, 2023
✓ Metabolic markers* — Improvements in insulin sensitivity observed in select populations with adjunctive NAC.
NIH/PubMed — Fulghesu AM, 2002
✓ Male reproductive parameters* — Clinical reports show gains in semen quality measures in specific contexts.
NIH/PubMed — Ciftci H, 2009
NIH/PMC — Jannatifar R, 2019
✓ Cardiometabolic redox balance* — Human data indicate effects on endothelial/oxidative measures in select settings.
NIH/PubMed — Camuglia AC, 2013
✓ General safety/overview* — Broad clinical experience summarized in human-focused reviews of NAC use.
NIH/PMC — Mokhtari V, 2016
✓ Immune/redox context* — Reviews outline NAC’s role in redox-regulated immune pathways.
NIH/PMC — dos Santos Tenório MC, 2021
Additional / Promising Evidence
✓ Performance & recovery* — Systematic review: NAC may improve exercise performance and antioxidant capacity in some contexts.
NIH/PMC — Fernández-Lázaro D, 2023
✓ Comprehensive redox/clinical overview* — Narrative reviews summarize multi-system clinical use of NAC across conditions.
NIH/PMC — Mokhtari V, 2016
We monitor research from leading institutions —
Harvard, Johns Hopkins, Mayo Clinic, Cleveland Clinic, Cambridge, Oxford, Stanford, Yale, Tufts, University of Florida, Oregon State University – Linus Pauling Institute, Columbia, Cornell, Ohio State — to align with credible science.*
Key Ingredients
- N-Acetyl Cysteine (NAC) — 1,000 mg (per 2 capsules)
- Other Ingredients — Vegetable cellulose (capsule), microcrystalline cellulose, vegetarian leucine
Brief Benefit Bullets
- Supports glutathione & antioxidant defenses*
- Helps maintain clear, comfortable airways*
- Nutritional support for normal detox pathways*
- Non-GMO, gluten-free, vegetarian-friendly*
- Crafted in FDA-registered, GMP-certified facilities*
-
3rd-party lab tested for purity & potency
Suggested Use
As a dietary supplement, take 2 capsules daily with food, or as directed by your healthcare practitioner. Do not exceed recommended dose. If pregnant, nursing, taking medications (especially nitroglycerin), or have a medical condition (e.g., cystinuria), consult your physician.*
Product Specifications
• Serving Size — 2 Capsules
• Servings Per Container — 45
• Form — Capsules
• Key Active — N-Acetyl Cysteine (NAC) 1,000 mg (per serving)
• Other Ingredients — Vegetable cellulose (capsule), microcrystalline cellulose, vegetarian leucine
• Free From — Non-GMO, gluten-free, vegetarian*
• Quality — Third-party tested for identity, potency & purity
Perfect For
• Individuals seeking potent antioxidant support*
• Those looking to support liver and lung health*
• People who want targeted glutathione precursor support*
LifeSource Vitamins — Proudly American — Since 1992
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
NAC 1000 mg — supports antioxidant defenses, detox pathways, and respiratory wellness. Clinically Studied Ingredients — NIH/PubMed!*
