There is no specific treatment or medication for CDV. Dogs with CDV will most often need general supportive care: fluids, medications to help with symptoms, antibiotics to address any secondary infections.
Early treatment can greatly improve the outcome. If neurological symptoms are present (seizures, tremors, head tilt, etc.), the chance of a full recovery is less likely.
Dogs infected with CDV should receive treatment as soon as possible and should be isolated from other dogs immediately to prevent risk of infection to other dogs.