Supreme Liver Supports is loaded with a clinical dosage of Milk thistle and N-Acetylcysteine Milk thistle offers liver support by reducing inflammation, promoting cell repair, protecting against toxins and free radicals, aiding in detoxification, and reducing oxidative stress. N-Acetylcysteine (NAC) is a popular supplement known for its powerful antioxidant properties and ability to support liver health through detoxification. As a precursor to glutathione, a crucial antioxidant in the body, NAC helps protect liver cells from damage caused by toxins, drugs, and oxidative stress.