<unk> , sold under the brand names Atarax and others, is an antihistamine medication. It is used in the treatment of itchiness, anxiety, and nausea, including that due to motion sickness. It is used either by mouth or injection into a muscle. Common side effects include sleepiness, headache, and a dry mouth. Serious side effects may include QT prolongation. It is unclear if use during pregnancy or breastfeeding is safe.<unk>  works by blocking the effects of histamine. It is a first-generation antihistamine in the piperazine family of chemicals. It was first made by Union Chimique Belge in 1956 and was approved for sale by Pfizer in the United States later that year. In 2019, it was the 75th most commonly prescribed medication in the United States, with more than 9million prescriptions.
Hydroxyzine
Naltrexone
Nabilone
Chloracyzine
Phenelzine
Nortriptyline
Ketanserin
Promethazine