Cephalexin comes in tablets and capsules in 250 mg and 500 mg and also comes in an oral suspension in strengths of 25mg/ml and 50 mg/ml. This medication should be given per your veterinarian's recommendations, 15 to 20 mg per pound of dog weight every eight to 12 hours, depending on the severity of the ear infection being treated. It is important to follow your veterinarian's prescription plan and complete all the medication for your dog, even if the ear infection seems to be better, so as ...