Promethazine HCl 12.5mg+, 25mg+, 50mg; tabs; +scored. Motion sickness: 25mg 30–60mins before travel; may repeat in 8–12hrs; maintenance 25mg twice daily. Perioperative nausea & vomiting: 25mg ...

In therapeutic dosage dextromethorphan does not inhibit ciliary activity. Promethazine is an H 1 receptor blocking agent. In addition to its antihistaminic action, it provides clinically useful ...