NAC 600mg with Selenium, 100 Capsules
NOW Foods NAC 600mg with Selenium provides N-Acetyl Cysteine, a precursor to glutathione, the body's primary intracellular antioxidant, paired with selenium to support antioxidant enzyme activity.
May be a fit for
- Adults seeking NAC to support glutathione synthesis and antioxidant pathways
- Individuals looking to maintain respiratory tract mucus viscosity with N-Acetyl Cysteine
- Those supporting liver detoxification processes with NAC and complementary selenium
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NOW Foods NAC 600mg with Selenium provides N-Acetyl Cysteine, a precursor to glutathione, the body's primary intracellular antioxidant, paired with selenium to support antioxidant enzyme activity. This combination supports respiratory health, liver function, and cellular defense for adults seeking foundational antioxidant support.
Why It's Worth Considering: The pairing of NAC with selenium is deliberate, selenoproteins like glutathione peroxidase require selenium as a cofactor, making this combination more functionally cohesive than NAC alone.
Product details
Who it may suit
May be a fit for
- Adults seeking NAC to support glutathione synthesis and antioxidant pathways
- Individuals looking to maintain respiratory tract mucus viscosity with N-Acetyl Cysteine
- Those supporting liver detoxification processes with NAC and complementary selenium
- Adults wanting selenium co-support alongside NAC for cellular oxidative balance
Considerations
- Active bleeding or bleeding disorders
- Taking nitroglycerin (may cause hypotension)
- Asthma (rare cases of bronchospasm at high doses)
- Scheduled surgery within 1 week
Compatibility & interactions
Works Well With
Ask Gabriel for personalized stacking recommendations.
Take Separately From
No significant interactions identified. Always consult your healthcare provider.
What to expect over time
Glutathione Boost
Increased intracellular glutathione production
Liver Support
Enhanced phase II detoxification
Respiratory & Mental
Clearer breathing, reduced compulsive symptoms
Systemic Antioxidant
Reduced oxidative stress markers
Based on clinical NAC research at 600-1800mg/day.
Explore complementary products
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Pure Encapsulations - Alpha Lipoic Acid 600mg, 60 CapsulesNAC produces glutathione, ALA recycles it. Together they form the core of the body's antioxidant defense network.$67.99
Thorne - Milk Thistle Phytosome (formerly Siliphos), 90 CapsulesNAC supports phase II liver detoxification while milk thistle (silymarin) protects liver cells from damage. The complete liver support stack.$48.99
NOW Foods - Selenium 200mcg, 180 CapsulesSelenium is required for glutathione peroxidase enzyme function. NAC + selenium maximizes the glutathione antioxidant pathway.$19.99Real reviews. A wider perspective.
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A few useful answers.
Research & further reading
More category questions
What is NAC used for?
NAC is the precursor to glutathione — the body's master antioxidant. It's used for liver detoxification, respiratory health (thins mucus), mental health (OCD, addiction, depression), immune support, and protecting against oxidative damage from toxins, alcohol, and environmental chemicals. It's also the standard ER treatment for acetaminophen overdose.
How much NAC should I take?
For general antioxidant support: 600mg 1-2x daily. For liver support: 1200-1800mg/day. For respiratory health: 600mg 2-3x daily. For mental health (OCD, addiction): 1200-2400mg/day (clinical study doses). Take on an empty stomach for best absorption.
Is NAC the same as glutathione?
No — NAC is a precursor that your body converts INTO glutathione. NAC has better oral bioavailability than direct glutathione supplements (which are largely destroyed in the stomach). NAC is generally more cost-effective for raising intracellular glutathione levels than oral glutathione, though liposomal glutathione is a viable alternative.
Can I take NAC every day?
Yes. NAC is well-tolerated for long-term daily use at standard doses (600-1800mg). It's water-soluble and excess is excreted. Common side effects are mild GI upset, which resolves by taking with food. There's no evidence of tolerance or need for cycling.
Does NAC help with hangovers?
NAC supports alcohol metabolism by boosting glutathione, which is depleted during alcohol detoxification. However, timing matters: take NAC BEFORE drinking (at least 30 minutes prior), not after. Taking NAC after alcohol may actually increase liver toxicity by interfering with the detoxification sequence.
Supplement information is provided for education and is not a substitute for personalized medical advice. Supplements are not intended to diagnose, treat, cure or prevent disease. Read the current product label before use.