1. A medication belonging to the phenothiazine class, used to treat allergies, nausea, vomiting, and motion sickness, and sometimes used as a sedative.
Usage: pharmaceutical/medical term; often used in combination with other drugs; available in multiple forms including tablets, injections, and suppositories

Examples

• The doctor prescribed promethazine to help control her nausea after surgery.
• Promethazine is commonly used to treat severe allergic reactions.
• She took promethazine before the flight to prevent motion sickness.
• The medication promethazine can cause drowsiness as a side effect.
• Promethazine is available both over-the-counter and by prescription, depending on the formulation.