PneumoVen provides a superior combination of natural vegetarian enzymes (as bromelain, derived from the pineapple plant), NAC (n-acetyl-l-cysteine) and a broad spectrum of selected botanical support agents for effective lung support.* Bromelain offers proteolytic enzymes which promote the breakdown of protein. NAC (N-Acetyl-L Cysteine) is a source of the essential amino acid, L-cysteine, and is a precursor to the important antioxidant, glutathione. NAC supports detoxification at the liver.* Additional biocompatible botanical agents are included for optimal nutritional support.