Last reviewed · How we verify

Td

University of Florida · FDA-approved active Small molecule

Td is a toxoid vaccine that provides active immunization against tetanus and diphtheria by stimulating antibody production against inactivated bacterial toxins.

Td is a toxoid vaccine that provides active immunization against tetanus and diphtheria by stimulating antibody production against inactivated bacterial toxins. Used for Active immunization against tetanus and diphtheria in adolescents and adults, Booster vaccination in previously immunized individuals.

At a glance

Generic nameTd
Also known asTetanus and Diphtheria Toxoid, Td toxoid, Td pre-conditioning, Tetanus-diphtheria (Td) toxoid, Diphtheria and tetanus toxoids, adsorbed
SponsorUniversity of Florida
Drug classToxoid vaccine
TargetTetanus toxin (tetanospasmin) and diphtheria toxin
ModalitySmall molecule
Therapeutic areaImmunology / Infectious Disease
PhaseFDA-approved

Mechanism of action

Td contains inactivated toxins (toxoids) from Clostridium tetani and Corynebacterium diphtheriae. When administered, these toxoids trigger the immune system to produce antibodies and cellular immunity against tetanus and diphtheria toxins, providing protection against these potentially fatal bacterial infections. Td is typically used as a booster vaccine in adolescents and adults who have completed primary immunization series.

Approved indications

Common side effects

Key clinical trials

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results