As combination vaccine, Tripacel is effective in avoiding whooping cough, tetanus and diphtheria in new born babies and children. This vaccine is injected into muscle. It contains ingredients like pertussis filamentous haemagglutinin, tetanus toxoid etc. Tripacel is recommended for children of maximum 7 years of age. This vaccine is suggested for infants of 2 months and above. Combination vaccine of this medication enables body to produce antibodies against bacteria that cause the above mentioned ailments. Effectiveness of this vaccine can be noticed after several weeks of administering.