[mass noun] A synthetic antihistamine drug derived from phenothiazine, used chiefly to treat the symptoms of allergies and motion sickness.
- ‘Causative medications are droperidol, diphenhydramine, meperidine, promethazine, atropine, and scopolamine.’
- ‘Lytic cocktail is a term used loosely to describe a fixed combination of meperidine, promethazine, and chlorpromazine intended typically for intramuscular use.’
- ‘Several antiemetics, such as metoclopramide, chlorpromazine, prochlorperazine, and promethazine, are regarded as safe for use during pregnancy.’
- ‘He was treated with promethazine and amoxicillin, and discharged.’
- ‘Metoclopramide, droperidol, prochlorperazine, and promethazine are commonly chosen rescue antiemetics.’
1950s: from pro(pyl) + ( di)meth(ylamine), a colourless gas + ( phenothi)azine.