Insulin Defalan (Porcine) is an insulin analog patented by Hoechst A.-G. and studied as a potentival treatment of type 1 diabetes mellitus. The primary activity of insulin, including Insulin Defalan, is the regulation of glucose metabolism. Insulin and its analog lower blood glucose by stimulating peripheral glucose uptake, especially by skeletal muscle and fat, and by inhibiting hepatic glucose production. Insulin Defalan (Porcine) differs from porcine insulin in that phenylalanine is removed from C-terminus of the B-chain.