Kedrab is part of the Human Immunoglobulin Gs class and treats Rabies. Human Immunoglobulin Gs are used to treat immunodeficiency, ITP, and leukemia. They work by producing antibodies to help the body protect itself from infections due to a weakened immune system. Kedrab is only available as a brand name drug. Get Kedrab for as low as $745.64, which is 15% off the average retail price of $880.99 for the most common version, by using a GoodRx coupon.