For the prevention in healthy dogs of Canine Distemper, Hepatitis, Para influenza, Parvovirus and Leptospirosis caused by Leptospira Canicola and L.ictero. For dosage administer 2 doses (1 ml. each) 2 to 3 weeks apart. Dogs vaccinated before 14 weeks of age, revaccinate every 2 to 3 weeks until at least 14 weeks of age. Revaccinate annually with a single dose to maintain immunity. 1 Dose & Syringe.