When you're having trouble getting the sleep your body craves, add some Zzzs to your night with ZzzQuil! ZzzQuil 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 products are non-habit forming and specifically formulated with clinically proven ingredients by our team of dedicated scientists. It contains a non-habit-forming ingredient, Diphenhydramine HCl, which causes drowsiness by blocking the action of histamine, a chemical that sends waking signals to the brain. Each dose (one 30 mL dose cup) contains 50 mg of Diphenhydramine HCl. ZzzQuil Soothing Sleep is a soothing liquid that is Chamomile Honey Flavored - you'll look forward to falling asleep, where you're at home or traveling through multiple time-zones. ZzzQuil over-the-counter medicinal sleep aids can be used to treat occasional sleeplessness, when you need a little extra help getting to sleep. ZzzQuil is the World's #1 Sleep Aid Brand!† Explore ZzzQuil's range of products to help you fall asleep, including our line of ZzzQuil PURE Zzzs Melatonin products. †Source Euromonitor International Limited; Consumer Health 2022 Edition; Sleep Aids, all channels, retail selling price, Global Brand Name ZzzQuil 2021 data