The sedative action of Unisom® may last up to 6 hours. Can I take Unisom® regularly? Unisom®, non-prescription sleeping pills, should only be used to relieve occasional sleeplessness. If your sleeplessness lasts for more than two weeks, talk to your doctor.

Product Information. What is this product / Purpose? Directions: Adults and children 12 years of age and over: take one tablet 30 minutes before going to bed; take once daily or as directed by a doctor.

Directions: Adults and children 12 years of age and over: 2 tablets (25 mg each) at bedtime if needed, or as directed by a doctor. sleeplessness persists continuously for more than 2 weeks. Insomnia may be a symptom of serious underlying medical illness.

The unisom tabs work very well. You are tired within 30 mins and stay asleep all night.

Diphenhydramine also causes drowsiness, and can be used by adults and children 12 years of age and older who occasionally have trouble sleeping (insomnia). The effects of diphenhydramine can last for up to 6 hours. If you have trouble sleeping, do not take this medication for more than a few nights in a row.

Unisom Simple Slumbers® Restorative Sleep™ is drug free and non-habit-forming. It can be taken as needed for occasional sleeplessness, and to obtain optimal benefits, use continuously for 28 days. Consult a health professional if you are experiencing long-term sleep difficulties.

It is generally recommended to use OTC sleep aids, including Unisom, for only a short period of time, typically no more than a few weeks.

How to take Unisom. Adults and children 12 years of age and over: Take 1 tablet at bedtime if needed, or as directed by a doctor. If you feel drowsy in the morning, consult a doctor or pharmacist as you may require a lower dose (25 mg).

When used as a sleep aid the maximum recommended dosage is 76mg for diphenhydramine citrate or 50mg for diphenhydramine hydrochloride.

In summary, Unisom is a brand of sleep aids that can be effective at helping people fall asleep and stay asleep. It is available in several forms and is usually taken by mouth just before bedtime. While it can be helpful in the short term, it is not a long-term solution for insomnia and can have potential side effects.

The bottom line. People sometimes use antihistamines, such as diphenhydramine and doxylamine succinate, to combat insomnia. These over-the-counter medications are OK for occasional use in most people. However, they may increase the risk for dementia and Alzheimer's disease if taken long term.

Drowsiness, dizziness, headache, constipation, stomach upset, blurred vision, decreased coordination, or dry mouth/nose/throat may occur. If any of these effects last or get worse, contact your doctor or pharmacist promptly.