Nutrivir, which NYBC has stocked since the start, is an excellent and tasty combination of nutrients in a base of vanilla-flavored whey protein concentrate. In addition to vitamins and minerals, Nutrivir contains n-acetylcysteine (NAC) and carnitine. It was formulated especially to combat wasting syndrome, which can occur in those undergoing cancer treatments, or in people with HIV/AIDS. (Wasting syndrome is defined as unintended and progressive weight loss, accompanied by weakness, fevers and nutritional deficiencies due to malabsorption.)
Here’s a bit more from the supplier of Nutrivir:
Increasing evidence suggests that abnormal metabolism of cysteine and glutathione plays a decisive role in loss of muscle and immune dysfunction associated with [wasting syndrome]. At this time, the most promising supplement for these patients is a cysteine derivative known as N-acetyl cysteine (NAC). NutriVir [supplies]… quantities of NAC and other antioxidants that have been shown in clinical trials to be effective in combating wasting, malabsorption and diarrhea associated with cancer and AIDS.
Read more details at the NYBC entry: