ZzzQuil is a sleep aid from the makers of Vicks NyQuil. ZzzQuil's active ingredient is Diphenhydramine HCl (50 mg) - it's a big word for a small compound that helps you sleep. ZzzQuil can be used for occasional sleeplessness and if you have difficulty falling asleep, it reduces the time it takes to fall asleep. It does not contain any pain relievers, and is non habit forming. You can find ZzzQuil in liquid and liquicaps, and should be taken before bedtime when you have adequate time to get a full nights sleep. ZzzQuil is on sale quite often, but don't stop there! Using coupons on ZzzQuil can really save you some money, especially when used during sale or gift card promotion. Print a coupon today and save on your next purchase!