In announcing that, i'm in no way affiliated Alpha X Boost with this Neopar vaccine, however as a breeder i will truly let you know that Parvo is something that we have alas experienced in our kennel. but as soon as we started out using this Neopar vaccine and feature vaccinated our puppies with it, we've got by no means had any other pup that has come down with the Parvo virus. this is a horribly nasty virus; but it's also preventable. http://t-rexmuscleadvice.com/alpha-x-boost/