My vet has given me Profender to treat tapeworms. We have been battling fleas for a while now but I think the DE has just about taken care of them. Anyway, I have always used Drontal in the past but the vet says this is much easier to apply. Does anyone have any experience with Profender? Is it safe for my kitties? Side effects? I'm sure my vet wouldn't give me anything that would harm them...I'm just extremely paranoid