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Phenergan Phenergan, also called Promethazine, is a Phenothiazine-derivative antihistamine used to relieve or prevent the symptoms of hay fever and other types of allergy. They work by preventing the effects of a substance called histamine that can cause itching, s more...

Promethazine Promethazine, one of a group called Phenothiazines, is used to treat serious mental and emotional disorders, including schizophrenia and other psychotic disorders. Some are used also to control agitation in certain patients, severe nausea and vomiting, se more...

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