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#3 in Immune Support Third-Party Tested
NOW NAC 600mg (250 Veg Capsules)
by NOW Foods
"250 capsules of NAC — the glutathione precursor for liver, lung, and antioxidant support"
Amazon Rating
4.6/5
Reviews
22,400+
Price Range
$22-28
Servings
250 servings
GMP CertifiedNon-GMOVegan
Our Editorial Rating
8.7
Very Good
Overview
NOW NAC provides 600mg of N-Acetyl Cysteine, the most bioavailable precursor to glutathione — the body's master antioxidant. NAC supports liver detoxification, respiratory health (thins mucus), and cellular antioxidant defense. It's used in hospitals as the standard treatment for acetaminophen overdose. Research also supports NAC for mental health, immune function, and fertility. The 250-capsule count provides over 8 months of daily supplementation.
Key Ingredients
| Ingredient | Amount |
|---|---|
| N-Acetyl Cysteine | 600 mg |
| Selenium | Included |
| Molybdenum | Included |
Pros & Cons
What We Like
- 250 capsules = 8+ month supply
- Glutathione precursor — master antioxidant
- Hospital-grade compound
- 22,400+ reviews, 4.6 stars
- Liver and respiratory support
What Could Be Better
- May interact with nitroglycerin
- Can cause GI upset
- Sulfur smell
- Research on some uses still emerging
Who Is This For?
Best For
- Liver support
- Respiratory health
- Glutathione production
- Antioxidant defense
Not Ideal For
- Those on nitroglycerin
- Those sensitive to sulfur compounds
- Those with bleeding disorders
Our Verdict
8.7/10 — Very Good
The glutathione precursor essential. NAC's role in supporting the body's master antioxidant makes it one of the most versatile supplements available. 8+ months at budget pricing.