When you're having trouble getting that sound sleep your body craves, add some Zzzs to your night with ZzzQuil. ZzzQuil liquid capsules work to help you fall asleep fast - in as little as 20 minutes - so you can get the sleep when you need it and wake refreshed. All ZzzQuil over-the-counter medicine products are non-habit forming and specifically formulated with clinically proven ingredients by our team of dedicated scientists. They contain a non-habit-forming ingredient, Diphenhydramine HCI, which causes drowsiness by blocking the action of histamine, a chemical that sends waking signals to the brain. Each dose (2 LiquiCaps) contains 50mg. It helps you get some shut-eye, so you can wake up feeling refreshed and ready to take on your day. These fast acting^ liquid capsules 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. ^vs. placebo Source Euromonitor International Limited; Consumer Health 2022 Edition; Sleep Aids, all channels, retail selling price, Global Brand Name ZzzQuil 2021 data. 24 Liquid Gel Caps