What is Herceptin (Trastuzumab)?
Herceptin (trastuzumab) is a monoclonal antibody. It belongs to a group of drugs made in the laboratory that are designed to attack specific cancer cells. Herceptin is given intravenously (by injection into a blood vessel) to treat some breast cancers. Genentech, Inc., located in South San Francisco, manufactures Herceptin.