Once you have taken your dog to the vet and the vet suspects that your ailing dog is suffering from bacterial infection, the vet will process skin scrapings as well as blood test to identify the type of bacteria that is making your dog sick. Depending on the findings, the vet may prescribe Cephalexin in order to treat your dog’s illness.
Cephalexin is recognized to be “quite active” in treating numerous gram-positive bacteria, and it is “moderately active” only in fighting gram-negative bacteria. And in cases of anaerobic bacteria, or those entities that efficiently develops without the need for oxygen to survive, the vet may lean towards prescribing penicillin rather than Cephalexin. But, of course, your dog’s vet will check your dog’s medical history first before giving a prescription, to make sure that your pooch is not allergic to either medication.