Requires veterinarians to provide a written prescription, upon the request of a client, for any animal patient of a client with whom the veterinarian has established an existing veterinarian-client-patient relationship, to be filled at the pharmacy of the client's choosing. Allows pharmacies licensed in the State to dispense medications prescribed by veterinarians. Specifies that violators may be subject to disciplinary action by the Hawaii Board of Veterinary Medicine, which may include fines or suspension or revocation of a license. (CD1)