Are there side effects of amoxicillin on cats?

If the dog is allergic to penicillin the reaction could be life threatening and characterized by difficulties in breathing and shock. In this case you must go to a veterinarian immediately, only a fast veterinarian action may save the dog's life.

In some cases also non-allergic dogs may experience flatulence and diarrhea. Extended use or inadequate dosage may cause a super-infection or the development of fungii.

Amoxicillin dosage must be advised by a veterinarian according to the age, weight and problem of the dog.