Yes, cephalexin for dogs are generally considered safe when prescribed by a veterinarian. Cephalexin is a broad-spectrum antibiotic used to treat bacterial infections in dogs, such as skin infections, urinary tract infections, and respiratory issues. The dosage depends on the dog’s weight, condition, and overall health. It's important to follow the veterinarian’s instructions closely, as incorrect dosing or stopping treatment early can lead to antibiotic resistance or recurrence of the infection. Side effects are usually mild but may include vomiting, diarrhea, or allergic reactions. Always consult a vet before giving cephalexin for dogs to ensure safe use.