It is weird with some meds but my little one had to be taken off HeartGuard for heartworm and Frontline for fleas. I gave her that one morning and by night she was tired and wobbily. Next day she was better but then was like she was drunk. Called my vet and he suspected maybe the HeartGuard so I pulled her off both. I put her on Interceptor and so far no problems. We do not have a flea problem here so I am going to keep her off any flea meds. Some of these meds for our babies are very tough on them. Hope your little one gets better. Susan |