Jan 20, 2020 · ZzzQuil is an antihistamine that reduces the effects of natural chemical histamine in the body. ZzzQuil is used as a sleep-aid for the relief of occasional sleeplessness, and to reduce the …

Occasionally, I take a sleep aid to help with the funky hours that I need to log sleep (hello night shift). ZzzQuil helps me get to sleep pretty quickly and I wake up feeling well rested, without any grogginess.

Aug 24, 2025 · Key Takeaways ZzzQuil is an over-the-counter sleep aid that contains diphenhydramine as the active ingredient. It is used to treat insomnia, but studies show it is not a very effective sleep …

Jun 23, 2025 · Many over-the-counter sleep aids, including ZzzQuil, use diphenhydramine for its sedative properties. Although it might help people sleep, it can sometimes cause side effects like dry …

Oct 1, 2025 · sleeplessness persists continuously for more than 2 weeks. Insomnia may be a symptom of serious underlying medical illness. If pregnant or breast-feeding, ask a health professional before …

Oct 13, 2025 · What Is ZzzQuil and What Does It Do? ZzzQuil is an over-the-counter sleep aid created by Vicks, the same brand known for NyQuil. But unlike NyQuil, which treats cold and flu symptoms, …

May 17, 2019 · The manufacturer recommends using ZzzQuil for relieving occasional sleeplessness. ZzzQuil works by helping to reduce the time it takes for a person to fall asleep.

Mar 15, 2021 · Clinically Proven Solutions: ZzzQuil Ultra Tablets, which includes Doxylamine which has been clinically proven to help people reduce both time to fall asleep and the number of nighttime …

Our Vicks ZzzQuil products have been carefully crafted to give you the best sleep possible. Unlike the Diphenhydramine HCL used to decrease symptoms of allergies, the only purpose of our …

Apr 8, 2022 · ZzzQuil contains the active ingredient diphenhydramine, an antihistamine that can help relieve occasional sleeplessness.