NAC (N-Acetyl Cysteine) NAC is a modified form of the amino acid cysteine. Helps the body produce glutathione, a major antioxidant. Supports detoxification. Used medically to treat acetaminophen overdose. May support respiratory and immune health. Why They’re Combined Milk thistle and NAC work synergistically: NAC increases glutathione levels. Milk thistle helps protect and repair liver cells. Together they enhance antioxidant defense and liver detox support. Common Uses Liver detox support Fatty liver support Alcohol-related liver stress General antioxidant support