<unk>  has a variety of medical uses, including: * Sedation * For nausea and vomiting associated with anesthesia or chemotherapy. It is commonly used postoperatively as an antiemetic. The antiemetic activity increases with increased dosing; however, side effects also increase, which often limits maximal dosing. * For moderate to severe morning sickness and hyperemesis gravidarum: In the UK,<unk>  is drug of first choice, being preferred as an older drug with which there is a greater experience of use in pregnancy (second in line being metoclopramide or prochlorperazine). * For allergies such as hay fever and together with other medications in anaphylaxis * To aid with symptoms of the common cold * Motion sickness, including space sickness * Hemolytic disease of the newborn * Anxiety before surgery
Promethazine
Naltrexone
Phenelzine
Chloracyzine
Medazepam
Hydroxyzine
Nabilone
Nordazepam