What is immune globulin?
Immune globulin is a substance made from human blood plasma that contains antibodies that protect against infection. It is given as a shot and provides short-term protection (approximately 3 months) against hepatitis A. Immune globulin can be given either before exposure to the hepatitis A virus (such as before travel to a country where hepatitis A is common) or to prevent infection after exposure to the hepatitis A virus. Immune globulin must be given within 2 weeks after exposure for the best protection.
