Chlorpromazine is a phenothiazine derivative and includes the typical neuroleptics, used in conventional antipsychotic treatment. In pets, it is used to control nausea and vomiting. These medications are believed to block dopamine receptors in the nervous system and may even inhibit the release of dopamine thereby influencing many involuntary functions like body temperature, metabolic rate, vomiting, blood pressure and alertness. It is commonly used for its antiemetic effects in dogs and also a preoperative tranquilizer in cattle, and goats. Though this drug is a registered drug for humans, Chlorpromazine can be obtained from a veterinarian or by prescription from a veterinarian.