Doxylamine succinte - antihistamine, Dextromethorphan HBr - Cough suppresant. Powerful cough relief so you can sleep. Nighttime relief. Alcohol 10%. Parents: Lean about teen medicine abuse. www.StopMedicineAbuse.org. www.vicks.com. Questions? 1-800-362-1683. www.vicks.com. Other information: Each 30 ml contains: sodium 36 mg. Store at room temperature.