Diphenhydramine HCI. From the makers of Vicks NyQuil. Non-habit forming. Fall asleep fast. Alcohol 10%. Not for pain. Not for colds. Just for sleep. www.ZzzQuil.com. Questions or comments? 1-877-881-5813. www.ZzzQuil.com. Other information: Each 30 ml contains: sodium 24 mg. Store at a room temperature. Does not meet USP requirements for light-resistant packaging.