


Still have questions?
Talk to one of Vitacost's friendly customer service representatives using Chat Live:

![]() |
![]() |
Natural Factors N-Acetyl Cysteine (NAC) 500 mg capsules contain a highly stable form of cysteine, an important sulfur-containing amino acid. NAC is a precursor to glutathione, a critical antioxidant scientifically proven to scavenge free radicals. NAC has the unique ability to maintain healthy lung tissue, support the body's natural defenses and enhance cellular health and longevity. These qualities make NAC especially beneficial for active people, the elderly and those exposed to polluted environments.
All Natural Factors products are manufactured in accordance with the Government of Canada's Good Manufacturing Practices (GMP), among the highest standards in the world.
| Amount Per Serving | % Daily Value | |
| N-Acetyl-L-Cysteine | 500 mg | * |
Although NAC's active sulfur is beneficial, some people sensitive to the sulfur may experience stomach irritation.
Keep out of reach of children.
Seal for your protection. For freshness, store in a cool, dry place.