The name for a group of drugs that relieve psychotic symptoms; their molecular structure, like that of the tricyclic drugs, consists of three fused rings. An example is chlorpromazine (Thorazine).
A group of psychotherapeutic medications with a phenothiazine structure which act by adrenergic blocking. They have antiemetic, antihistaminic, and antispasmodic activity in addition to CNS effects.
One of a group of tranquilizing drugs with antipsychotic actions thought to act by blocking dopaminergic transmission (messages sent using the substance dopamine) within the brain. See the entire definition of Phenothiazine