Diphenhydramine HCl. Non-habit forming. Fall asleep fast. Not for pain. Not for colds. Just for sleep. From the makers of Vicks NyQuill. www.vicks.com. www.pg.com. Made in Canada. Other information: Store at 68-77 degrees F(20-25 degrees C)., Avoid excessive heat above 104 degrees F (40 degrees C)., Protect from light.