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  1. ZzzQuil Uses, Side Effects & Warnings - Drugs.com

    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 …

  2. Better Sleep For All - ZzzQuil

    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 …

  3. How Does ZzzQuil Work for Insomnia? - Verywell Health

    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 …

  4. ZzzQuil Review: Is This Sleep Aid Worth the Hype?

    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 …

  5. ZzzQuil Reviews: Does It Really Work? | Trusted Answers

    Feb 27, 2025 · ZzzQuil liquid contains Diphenhydramine HCl is very effective in deactivating alertness and putting the mind and body at ease and at rest, promoting sleepiness. We …

    • Reviews: 63
    • Vicks ZzzQuil Nighttime Sleep Aid: A Friendly Guide to Better Sleep

      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 …

    • DailyMed - ZZZQUIL NIGHTTIME SLEEP-AID- diphenhydramine …

      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 …

    • ZzzQuil: Uses, dosage, side effects, and is it addictive?

      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.

    • ZzzQuil ULTRA, Sleep Aid, Doxylamine Succinate 25mg, Sleep

      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 …

    • ZzzQuil Liquid Sleep Aid, Nighttime Sleep Aid Liquid Warming …

      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 …