My vet prescribed Revolution as well. I was at my vet and overheard one the people at the front desk saying that they no longer carry Revolution because some dogs become immune to it after using it so many times therefore it can become ineffective. She said that is why they only carry Sentinel. Why then my vet gave my dog Revolution beats me but I figure he is a puppy and has only been applied with it once so I will try it out for a few months more. I did notice that it has lethargic effects. |