My dog has always tken Advantage and I never thought much about it, but I noticed in the last few months, she seems to get diahrehha the next day after I apply it. She also has a bad smell in her mouth and goes off her food. It lasts about 3-4 days. Could she be allergic to it?
She is an indoor dog, but she does go for long walks in tall grass often.
Is there another medication you can suggest?
She is 7 years old.
It is possible that she is having a reaction to it. This is unusual. I would talk to your vet about this and possibly try another flea med. vetcare