You are going to have to get an RX from a vet. It is prescription medication for protecting against heartworm and can't be sold without an RX. Do you know any vets in the hobby? If not you may want to print an article and bring it into them so that they know why you would like to purchase it, otherwise they probably won't sell it to you because they are going to be suspicious that you want it for your pet and they will not just write out an RX without doing a blood test. So then again if they aren't familiar with the whole interceptor/red bug thing, well, it could be kind of embarrassing.:lol: