Certiva: Full prescribing information from RxList.Diptet: Full prescribing information from RxList.MedlinePlus: Diphtheria and Tetanus Toxoids and Pertussis Vaccine Adsorbed (Systemic): Provides information on usage, precautions, side effects and brand names when available. Data provided by various government agencies and health-related organizations.Tripedia: Full prescribing information from RxList.