 The extinction coefficient of CAP changes during its forced degradation by heat, a fact that will have to be accounted for in pharmaceutical stability studies should it be manufactured as a microbicide active pharmaceutical ingredient.The potential of CAP to inhibit infections by human immunodeficiency virus type 1 (HIV-1) and several herpes viruses "in vitro" have been investigated.According to a 1944 study by Hodge, there was no histological change in rats fed CAP for a year.