NOW Foods NAC 600mg
by NOW Foods
"The master antioxidant precursor — 600mg NAC for glutathione production, liver support, and respiratory health"
Overview
NOW Foods NAC (N-Acetyl Cysteine) provides 600mg of the acetylated form of the amino acid L-cysteine — the rate-limiting precursor to glutathione, the body's master antioxidant. NAC has been used in hospitals for decades as the standard treatment for acetaminophen (Tylenol) overdose due to its powerful liver-protective effects. Beyond liver support, NAC thins mucus (mucolytic), supports respiratory health, provides neuroprotection, and has emerging research for mental health conditions including OCD and addiction. It's one of the most versatile supplements available.
Key Ingredients
| Ingredient | Amount |
|---|---|
| N-Acetyl Cysteine (NAC) | 600 mg |
Pros & Cons
What We Like
- Glutathione precursor (master antioxidant)
- Hospital-grade liver protection
- 100 capsules for under $18
- Mucolytic (respiratory support)
- 15,000+ Amazon reviews
What Could Be Better
- Sulfur smell (capsule odor)
- Can cause GI upset in some
- May interact with blood thinners
- 600mg is standard (some protocols use 1200-1800mg)
Who Is This For?
Best For
- Glutathione and antioxidant support
- Liver health and detoxification
- Respiratory and mucus support
- Mental health support (emerging research)
Not Ideal For
- Those sensitive to sulfur compounds
- Those on blood thinners
- Those with asthma (rare bronchospasm)
Our Verdict
NOW NAC is the affordable glutathione precursor with decades of hospital-grade evidence. From liver protection to respiratory health to emerging mental health applications, NAC is one of the most versatile and well-studied supplements available.
Alternatives to Consider
No direct alternatives listed for this product yet.