Big Paws Only Dog Forums

I am experiencing this right now. I bought this brand today for both my lhasa and shihtzu thinking that it would be a good preventative because of killing the eggs and larvae as well. They do not currently have a flea problem so it is monthly preventative and a different brand than what I normally buy. 15 minutes after application, my lhasa started running around, trying to hide in corners, hiding under furniture, panting, barking, whining; just would not sit still. I immediately knew it had to have something to do with this so I bathed him and gave him a benadryl. As I went to bathe the shihtzu, he too began to experience the same symptoms. I have called the 800 number and given the same instructions as you but nothing is helping. I know I'll be up all night. My vet's office is closed on Thurs. but they will go the first thing in the morning.  No vomiting or foaming at the mouth. I was also instructed to give them tuna juice to take any taste out of their mouth had they licked the areas which I don't think they did. They are both exhausted, I know I will have a sleepless night, and they are inconsolable. You are correct. There is no specific 'side effects' stated on the package.