Canine Parainfluenza Vaccine, Modified Live Virus, Bordetella bronchiseptica Vaccine, Avirulent Live Culture is designed to be administered intranasally for convenient, rapid prevention of Canine Upper Respiratory Infection (Canine Cough). Onset of protection begins as early as 48 hr after administration. Flexible dosing from 0.5 to 1 mL to fit the size of the dog. Safe for use in puppies as young as 3 weeks of age. Puppies vaccinated between 3 and 6 weeks of age should be revaccinated at 6 weeks of age. Rapid onset of immunity against canine parainfluenza and B bronchiseptica. Rapid, safe kennel cough protection for puppies as young as 3 weeks of age. Internasal application makes it convenient and easy-to-use. Single dose vaccination kit with nasal dropper.