This sleep aid helps you fall asleep fast and stay asleep longer. ZzzQuil Ultra tablets contain 25 mg of Doxylamine Succinate. Doxylamine works by blocking the histamine receptors in the brain. This action is responsible for the sedative properties of Doxylamine Succinate.

In Each Tablet: Active Ingredients: Doxylamine Succinate (25 Mg), Nighttime Sleep-Aid. Inactive Ingredients: Anhydrous Dibasic Calcium Phosphate, Dibasic Calcium Phosphate Dihydrate, FD&C Blue 1 Aluminum Lake, Magnesium Stearate, Microcrystalline Cellulose, Sodium Starch Glycolate.

Q: Can I take ZzzQuil every night? A: ZzzQuil should only be used for occasional sleeplessness. Stop use and ask a doctor if sleeplessness persists continuously for more than two weeks. Insomnia may be a symptom of a serious underlying medical illness.

8 hours These knock me out and I generally stay asleep the entire night. Amazing. Other reviewers are correct, make sure you have a whole 8 hours to sleep when taking these otherwise they cause drowsiness in the morning.

It may be helpful to know our ZzzQuil Ultra Tablets use Doxylamine Succinate as the sleep agent, while ZzzQuil liquid's active ingredient is Diphenhydramine HCl.

Drowsiness, dizziness, constipation, stomach upset, blurred vision, or dry mouth/nose/throat may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. To relieve dry mouth, suck (sugarless) hard candy or ice chips, chew (sugarless) gum, drink water, or use a saliva substitute.

ZzzQuil is a safe and effective medication for treating short-term sleeping difficulties, or insomnia, in people over 12 years old.