Diphtheria antitoxin is a biological preparation used to neutralize the toxin produced by Corynebacterium diphtheriae. The antitoxin is derived from the serum of horses that have been immunized against the diphtheria toxin, making it an antibody-based therapy. The primary role of the antitoxin is to prevent the progression of the disease by binding to and neutralizing the circulating toxin.
