Ingredients in Tdap Vaccines
This page shows the ingredients in Tdap vaccines currently available for use in the U.S.
Tdap vaccines protect against three bacteria — tetanus, diphtheria and pertussis. Find out more about these diseases and the vaccines that protect against them.
| Vaccine name* | Antigen | Adjuvant | Stabilizers | Preservatives | Residual byproducts |
|---|---|---|---|---|---|
| Adacel | Tetanus toxoid, Diphtheria toxoid, Inactivated pertussis toxin (PT), Filamentous hemagglutinin (FHA), Pertactin (PRN), Fimbriae types 2 & 3 (FIM) | Aluminum phosphate | 2-phenoxyethanol | None | Formaldehyde, Glutaraldehyde |
| Boostrix | Tetanus toxoid, Diphtheria toxoid, Inactivated pertussis toxin (PT), Filamentous hemagglutinin (FHA), Pertactin (PRN) | Aluminum hydroxide | Sodium chloride | None | Formaldehyde, Polysorbate 80 |
*Information from package insert dated: no date (Adacel, Boostrix)
Reviewed by Paul A. Offit, MD, on October 7, 2024