NAC 1000 mg, Free Radical Protection, 120 Tablets, Now

1,000 mg of N-Acetyl Cysteine (NAC) per tablet — a stable cysteine precursor that supports glutathione production, antioxidant defences, immune function, liver health, and respiratory wellness. Vegetarian, non-GMO, kosher. 120 tablets.

Why

NAC (N-Acetyl Cysteine) is a stable, bioavailable form of the amino acid cysteine and one of the most important precursors to glutathione — often called the body’s master antioxidant. Glutathione is produced in virtually every cell and plays a central role in neutralising free radicals, supporting detoxification, and protecting cells from oxidative damage. Unlike glutathione itself, which is poorly absorbed when taken orally, NAC is efficiently absorbed and readily converted to cysteine for glutathione synthesis. Beyond glutathione support, NAC has a well-established role in respiratory health — it acts as a mucolytic, helping to thin and clear mucus from the airways. It is also widely used to support liver health, brain and nervous system function, and immune resilience. NOW Foods delivers a high-strength 1,000 mg per tablet in a clean vegetarian formula — non-GMO, kosher certified, and GMP quality assured. 120 tablets — 40–120-day supply depending on dose.

Key Benefits

• Supports glutathione production — the body’s master antioxidant
• Protects against free radical damage and oxidative stress
• Supports liver health and detoxification pathways
• Supports immune system function
• Supports brain and nervous system health
• Supports respiratory wellness — mucolytic action helps thin mucus
• 1,000 mg per tablet — high-strength formula
• Vegetarian, non-GMO, kosher certified
• GMP quality assured — NOW Foods since 1968
• 120 tablets — 40–120-day supply at 1–3 tablets daily

Formula Highlights

• N-Acetyl Cysteine (NAC) — 1,000 mg per tablet; stable, bioavailable cysteine precursor for glutathione synthesis
• Efficiently absorbed orally — unlike glutathione itself, NAC is well absorbed and converted to cysteine in the body
• Mucolytic action — supports respiratory health by helping thin and clear mucus
• Vegetarian tablet — no gelatin or animal-derived ingredients

Supplement Facts

Serving Size: 1 Tablet | Servings Per Container: 120

Suggested Use

Take 1 tablet 1 to 3 times daily, or as directed by your healthcare professional.

Other Ingredients

Microcrystalline cellulose, hydroxypropyl cellulose, vegetable stearic acid, vegetarian coating, silicon dioxide. Vegetarian, non-GMO, kosher.

About NOW Foods

Family owned since 1968, NOW Foods is one of the most trusted names in natural supplements — committed to making high-quality, affordable supplements that are GMP quality assured, rigorously tested, and never compromised on ingredients.

Warnings

Consult your healthcare practitioner before use if pregnant, nursing, taking medication, or if you have a medical condition. NAC may interact with certain medications including nitroglycerin and activated charcoal — consult your doctor if relevant. Keep out of reach of children. Store in a cool, dry place.