When you're having trouble getting that sound sleep your body craves, add some Zzzs to your night with ZzzQuil. This ZzzQuil sleep aid works to help you fall asleep fast - in as little as 20 minutes** - so you can get sleep when you need it and wake refreshed. All ZzzQuil sleep aid products are non-habit forming and specifically formulated with clinically proven ingredients by our team of dedicated scientists. This ZzzQuil sleep aid is non-habit forming and contains Diphenhydramine HCI, which causes drowsiness by blocking the action of histamine, a chemical that sends waking signals to the brain. For this sleep aid, each dose (one 30 mL dose cup) contains 50 mg. This non-habit-forming sleep aid has what you need for a great night's rest without the stuff you don't - no high fructose corn syrup, alcohol, or artificial dyes. ZzzQuil FREE & CLEAR Liquid Sleep Aid is Strawberry Flavored and tastes great - you'll look forward to falling asleep whether you are at home or traveling through multiple time-zones. ZzzQuil over-the-counter medicine sleep aids for adults can be used to treat occasional sleeplessness when you need a little extra help getting to sleep. Explore ZzzQuil's range of products to help you fall asleep, including our line of ZzzQuil PURE Zzzs Melatonin products. **in a randomized, double-blind, placebo-controlled, in-home, crossover study, in subjects suffering from occasional sleeplessness (n=22) ^ vs. placebo