North American brand name for Eli Lilly's now discontinued 100% U100 porcine R/neutral, soluble insulin. Like all R or neutral insulins, nothing is added (suspensions) to alter the insulin's action or speed. Novo Nordisk produced a similar Pork Actrapid but discontinued it at the end of December 2007. CP Pharma does also--Hypurin Porcine Neutral. Those who have expired vials of Lilly's Iletin II R appear to be able to use them safely 12 months beyond the vial's expiration date. Directly from the HealthCanada page: