Drug class

Diphtheria Toxoid

Diphtheria toxoid is an active immunizing agent belonging to the bacterial vaccine and toxoid class, prepared by chemically inactivating the exotoxin produced by *Corynebacterium diphtheriae* (typically using formaldehyde) while preserving its antigenic properties. Read more about Diphtheria Toxoid

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About Diphtheria Toxoid.

Diphtheria toxoid is an active immunizing agent belonging to the bacterial vaccine and toxoid class, prepared by chemically inactivating the exotoxin produced by *Corynebacterium diphtheriae* (typically using formaldehyde) while preserving its antigenic properties.

Its principal mechanism of action is stimulating host B lymphocytes to generate specific neutralizing IgG antitoxin antibodies, which confer protective immunity by binding and neutralizing diphtheria toxin during subsequent exposure.

Primarily administered in combination formulations—such as DTaP, Tdap, DT, and Td—diphtheria toxoid is indicated for the prevention and routine prophylaxis of respiratory and cutaneous diphtheria across pediatric and adult populations.