MedlinePlus

Donepezil

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Why is this medication prescribed?
Donepezil is used to treat dementia (a brain disorder that affects the ability to remember, think clearly, communicate, and perform daily activities and may cause changes in mood and personality) in people who have Alzheimer's disease (AD; a brain disease that slowly destroys the memory and the ability to think, learn, communicate and handle daily activities). Donepezil is in a class of medications called cholinesterase inhibitors. It improves mental function (such as memory, attention, the ability to interact with others, speak, think clearly, and perform regular daily activities) by increasing the amount of a certain naturally occurring substance in the brain. Donepezil may improve the ability to think and remember or slow the loss of these abilities in people who have AD. However, donepezil will not cure AD or prevent the loss of mental abilities at some time in the future.

How should this medicine be used?
Donepezil comes as a tablet and an orally disintegrating tablet (tablet that dissolves quickly in the mouth) to take by mouth. It is usually taken once a day with or without food, in the evening just before bedtime. Take donepezil at around the same time every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take donepezil exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.

Donepezil helps control the symptoms of Alzheimer's disease but does not cure it. Continue to take donepezil even if you feel well. Do not stop taking donepezil without talking to your doctor.

Your doctor may start you on a low dose of donepezil and increase your dose after 4 to 6 weeks. Your doctor may increase your dose again 3 or more months later.

Swallow the 23-mg tablet whole; do not split, crush or chew it. Tell your doctor if you are unable to swallow the tablet whole.

To take the orally disintegrating tablet, place the tablet on your tongue and wait for it to dissolve. Drink some water after the tablet dissolves.

Ask your pharmacist or doctor for a copy of the manufacturer's information for the patient.

Other uses for this medicine
This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.

What special precautions should I follow?
Before taking donepezil,
What special dietary instructions should I follow?
Unless your doctor tells you otherwise, continue your normal diet.

What should I do if I forget a dose?
If you forget to take a dose of donepezil, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one. If you do not take donepezil, for 1 week or longer, you should call your doctor before starting to take this medication again.

What side effects can this medication cause?
Donepezil may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away: Some side effects can be serious. If you experience any of these symptoms, call your doctor immediately or get emergency medical treatment: Donepezil may cause other side effects. Call your doctor if you have any unusual problems while you are taking this medication.

What should I know about storage and disposal of this medication?
Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.

In case of emergency/overdose
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.

Symptoms of overdose may include the following:
What other information should I know?
Keep all appointments with your doctor.

Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.

It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.

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Last Revised - 01/15/2014
© 2014. The American Society of Health-System Pharmacists, Inc.
ASHP
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