Overview: Promethazine is a medicine used to help with allergy symptoms, reduce or prevent nausea and vomiting in certain situations, or provide sedative or pain-relieving effects after surgery.

After enrollment and completion of study period 1 (treatment D, 50 mg [10 mL] of promethazine oral syrup), one subject was withdrawn from the study because of violation of study protocol.

Nine of these 22 patients received 1 mg or less of promethazine per kilogram of body weight, plus another drug with respiratory depressant effects. A wide range of weight-based doses (0.45 to 6.4 ...

Promethazine (Phenergan ) is an antihistamine and antiemetic, prescribed for allergic conditions, prevention of motion sickness, and to control nausea and vomiting during and after surgery.It ...

At intervals of five to nine days, healthy volunteers were given two 12.5-mg promethazine rectal suppositories, one 25-mg suppository, one 50-mg suppository, or 50 mg (10 mL) of promethazine oral ...