N-acetyl cysteine (NAC) is the direct precursor of glutathione – the liver's most important antioxidant. Without enough glutathione, the liver cannot neutralize toxins effectively.
Why glutathione is crucial
It binds heavy metals, drug residues and free radicals so they can be excreted. In emergency medicine, NAC is used against paracetamol poisoning – striking proof of its liver-protective power.
Benefits for the liver
- Replenishes glutathione stores
- Acts as antioxidant and anti-inflammatory
- May improve elevated liver values in fatty liver
Dosage
- Typical: 600–1200 mg per day, ideally on an empty stomach.
- Combined with vitamin C it further supports glutathione production.
Caution & when to see a doctor
Well tolerated but may cause stomach upset in sensitive people. With asthma or nitrates/blood thinners, check first. Acute severe upper-abdominal pain always needs medical care.
FAQ
NAC or glutathione directly? NAC is a reliable, well-absorbed precursor and usually cheaper.
When to take it? On an empty stomach, mornings or between meals.
You'll find quality 600 mg NAC products below.
