Cephalexin Oral Capsule For Dogs And Cats is regarded as one of the safest medications for the administration purpose in the pets present in the market. Cephalexin is listed on, The WHO Model List of Essential Medicines, as one of the most effective and safest medicines required in a healthy system. The medicine Cephalexin for Dogs and Cats does not have any sedative or tranquilizing component in it. So, it does not cause any form of drowsiness to your pet.