With it being Fall, and noticing a significant amount of mosquitos in our area, I decided to reorder some flea and tick medicine for my furry friend. 6 months ago I ordered her a 6 month supply of Revolution from an online Pharmacy. I called my vet ( I go to Banfield ) and they told me I would have to bring in my dog for a heartworm test before they could write me a script for Revolution. Not a problem, I made an appointment, did a heartworm test, left with a script. That was in april. I placed an order online couple days ago for a 12 month pack of Revolution. The online pharmacy calls me, tells me that the vet will only approve a 6 month supply. I get on the phone with the vet, she tells me because my dog is due for a heartworm test in April 2016, she won't give me a script for a 12 month supply. It wouldn't be a big deal to me, but a 6 month supply cost me $60 and a 12 month $84. My question is, can the vet really refuse to provide me a prescription for just flea and tick medication?