Diphenhydramine is the active ingredient. The recommended dose is two LiquiCaps, which provides a total of 50 mg of diphenhydramine.
According to product information, ZzzQuil LiquiCaps may help you fall asleep in as little as 20 minutes. Individual results can vary.
Labeling lists ZzzQuil LiquiCaps for people aged 12 years and older and states they are not for children under 12.
Common package sizes shown include 48-count and 72-count options.
They are sold as gelcaps (LiquiCaps)—liquid-filled capsules in gelcap form.
The product is described as non-habit forming. The recommended dose is two LiquiCaps, which provides 50 mg of diphenhydramine.
Reviewer summaries report strong effectiveness for both falling asleep and staying asleep, with faster sleep onset and sustained full-night sleep. Many reviewers note minimal next-day grogginess.
ZzzQuil LiquiCaps are described as a nighttime sleep aid intended to treat occasional sleeplessness and help you fall asleep quickly.