Muricin is an antibiotic prescribed to treat a range of bacterial skin infections.Your veterinarian may prescribe this ointment if your pup is experiencing pyoderma, or hot spots. This broad-spectrum antiobiotic can slow the growth of bacteria and help relieve itchy, painful hot spots.We directly source prescription medications from manufacturers and wholesale distributors registered with the FDA and licensed by applicable state boards. Guaranteed genuine, and where applicable, backed by the manufacturer.