Alimemazine, structurally related to drugs such as chlorpromazine, acts as a sedative, hypnotic, and antiemetic for prevention of motion sickness (which occurs due to a difference between actual and expected motion).
Although it is structurally related to drugs such as chlorpromazine, it is not used as an antipsychotic. It also acts as a sedative, hypnotic, and antiemetic for prevention of motion sickness. Motion sickness occurs due to a difference between actual and expected motion. 
