Our breeder has been issuing major warnings about issues/side effects with Trifexis. I know it is possible with all such medications but she was adamant that we not use that one. The dog we have gets Vectra 3D and the cats used to get Revolution, however the last time I used it my sensitive skin guy lost the fur that was at the application site. So I asked my vet and he said it sounded suspicious so I am switching them to Activyl. They are indoor only cats so ticks and other nasties aren’t as much of an issue as simply avoiding a flea infestation. I had a choice of Activyl or regular Vectra but I have read that Activyl is the safer of the two, although buying from online sources is really suspect so I only get that stuff through my vet.
