N-Acetyl Cysteine (NAC) is a stable form of the non-essential amino acid L-Cysteine. It is a sulfur-containing amino acid that acts as a stabilizer for the formation of protein structures, and promotes the formation of glutathione. Glutathione is a powerful free radical scavenging compound that also helps to maintain normal, balanced immune system function and is a strong detoxifier in the liver and lungs. This 1000mg extra strength dosage reduces the number of pills needed per day and is our strongest offering.Each tablet contains:N-Acetyl-L-Cysteine (NAC) 1000 mgNon-Medicinal Ingredients: Cellulose, Hyprolose, Stearic Acid (vegetable source), Tablet Coating (hypromellose, stearic acid (vegetable source), sunflower lecithin, triethyl citrate), Silica. Dosage: Take one tablet daily with meals.