Pure Encapsulations, NAC (n-acetyl-l-cysteine) 600 mg, 360 CapsulesDescription Free radicals are atoms molecules and ions with unpaired electrons. Your body contains large amounts of them because they participate in many chemical reactions that are essential to your health. However an excess of free radicals is equally harmful as none at all and can negatively affect your cells. Since free radicals are so important your body has many mechanisms to limit free radical induced damage and repair the damage that does