Bharat Biotech International Limited manufactures Tetanus Vaccine Adsorbed – PTAP. Bharat Biotech International Limited supplies vaccines and biotherapeutics. Tetanus Vaccine Adsorbed – PTAP is prepared by detoxifying the tetanus toxin produced by Clostridium tetani. Tetanus Vaccine Adsorbed – PTAP is prepared by growing the tetanus bacillus in protein free medium and is further highly purified before adsorption on aluminum phosphate gel. This vaccine is supplied in 5ml vials. It comes under the brand name of TEVAC.