Promethazine is a medicine which is used in allergic disorders, nausea and vomiting, difficulty sleeping, preoperative sedation in surgery or obstetrics and sedation.
Short term effects
Common features include drowsiness, nausea, vomiting, flushing, dilated pupils, dry mouth and tongue, hot dry skin, fever, sinus tachycardia, hypertension, ataxia, nystagmus, agitation, delirium, psychosis and visual hallucinations.