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Aricept

Generic name: donepezil

Brand names: Aricept, Aricept ODT

Last updated August 25, 2026 0 views Reviewed by Melisa Puckey, BPharm
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What is Aricept?

Aricept is used to treat dementia caused by Alzheimer's disease. Aricept can help improve attention, memory, behavior, and the ability to do daily activities in dementia patients.

Aricept is not a cure for Alzheimer's disease; it may help improve symptoms, but the condition will progress over time, even in people who take this medicine.

Aricept generic name is donepezil.

Aricept improves the function of nerve cells in the brain. Aricept works by preventing the breakdown of a chemical called acetylcholine (ah SEET il KOE leen). People with dementia usually have lower levels of this chemical, which is important for the processes of memory, thinking, and reasoning.

The Aricept drug class is cholinesterase inhibitor.

Aricept FDA approval was first approved on August 13, 1998. Aricept is used to treat dementia in mild, moderate, and severe Alzheimer’s Disease.

How should I take Aricept?

Take Aricept exactly as it was prescribed for you. Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended.

Take Aricept one time each day.

You may take Aricept with or without food.

23 mg tablets: Do not crush, chew, or break the tablet. Swallow it whole.

How to take Aricept ODT (orally disintegrating tablet):

Oral solution: Measure liquid medicine carefully. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).

If you need surgery or dental work, tell the surgeon ahead of time that you are using Aricept. You may need to stop using the medicine for a short time.

You should not stop using Aricept without your doctor's advice.

Store at room temperature, away from moisture and heat.

Warnings

Before taking this medicine, tell your doctor if you have a heart rhythm disorder such as "sick sinus syndrome" (slow heartbeats), an enlarged prostate, urination problems, asthma, obstructive pulmonary disease, or a seizure disorder such as epilepsy.

If you need to have any type of surgery, tell the surgeon ahead of time that you are taking Aricept.

Before taking this medicine

You should not use this medicine if you are allergic to the active ingredient donepezil, certain other drugs or the inactive ingredients in this medicine. Tell your doctor if you are allergic to any medicines.

To make sure this medicine is safe for you, tell your doctor if you have:

  • a heart rhythm disorder;
  • a history of stomach ulcers;
  • an enlarged prostate or urination problems;
  • liver or kidney disease;
  • epilepsy or other seizure disorder;
  • trouble swallowing; or
  • asthma, chronic obstructive pulmonary disease (COPD), or other breathing disorder.
  • an allergy to sulfites (if taking the oral solution).

It is not known whether Aricept will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medicine.

It is not known whether donepezil passes into breast milk or if it could harm a nursing baby. Tell your doctor if you are breast-feeding a baby.

Aricept side effects

Common Aricept side effects may include nausea, vomiting, diarrhea, loss of appetite, weight loss, muscle cramps, sleep problems (insomnia), or feeling tired.

Serious side effects of AriceptGet emergency medical help if you have signs of an allergic reaction with side effects symptoms of hives, difficulty breathing, and swelling of your face, lips, tongue, or throat.

Stop using this medicine and call your doctor at once if you have:

  • severe or ongoing vomiting;
  • a light-headed feeling, like you might pass out;
  • slow heartbeats;
  • seizure (convulsions);
  • painful or difficult urination;
  • new or worsening breathing problems; or
  • signs of stomach bleeding - severe heartburn or stomach pain, bloody or tarry stools, coughing up blood or vomit that looks like coffee grounds.

This is not a complete list of side effects of Aricept, and others may occur. Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

Aricept dosing information

Usual Adult Aricept Dosage for Alzheimer's Disease

Initial dose: 5 mg orally once a day, in the evening before retiring to bedMaintenance dose for mild to moderate Alzheimer's disease: 10 mg orally once a day after the patient has been on an initial dose of 5 mg once a day for 4 to 6 weeksMaintenance dose for moderate to severe Alzheimer's disease: 23 mg orally once a day, after the patient has been on a dose of 10 mg once a day for at least 3 monthsComments: A higher dose of 10 mg may or may not provide a statistically significant greater clinical benefit than a 5 mg dose. The prescriber and patient's preferences should be considered.Uses: For mild, moderate, and severe Alzheimer's type dementia.

Aricept is available as:

  • tablets (5 mg, 10 mg, 23 mg)
  • orally disintegrating tablets (ODT) (5 mg ODT end of marketing date 30 April 2015) (10 mg ODT end of marketing date 28 February 2017)
  • oral solution

What happens if I miss a dose?

If you miss a dose, just wait. Take only the next dose at your usual time. Do not take two doses at the same time to make up for a missed dose.

If you miss your doses for more than 7 days in a row, call your doctor before taking the medicine again.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Overdose symptoms may include severe nausea, vomiting, drooling, sweating, blurred vision, feeling light-headed, slow heartbeat, shallow breathing, muscle weakness, fainting, or seizure (convulsions).

What other drugs will affect Aricept?

Tell your doctor about all medicines you use, and those you start or stop using during your treatment with Aricept, especially:

  • NSAIDs (nonsteroidal anti-inflammatory drugs) - aspirin, ibuprofen (Advil, Motrin), naproxen (Aleve), celecoxib, diclofenac, indomethacin, meloxicam, and others;

This list is not complete. Other drugs may interact with donepezil, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed in this medication guide.

This is not all the information you need to know about Aricept (donepezil) for safe and effective use and does not take the place of talking to your doctor about your treatment. Review the Aricept Package Insert here, and discuss this medicine and any questions you have with your doctor or other health care provider.

Storage

Store at room temperature between 59° to 86°F (15° to 30°C).

Ingredients

Active ingredient: donepezil hydrochloride

Inactive ingredients:

Film-coated tablets (5 mg and 10 mg): lactose monohydrate, cornstarch, microcrystalline cellulose, hydroxypropyl cellulose, and magnesium stearate. The film coating contains talc, polyethylene glycol, hypromellose, and titanium dioxide. Additionally, the 10 mg tablet contains yellow iron oxide (synthetic) as a coloring agent.

Film-coated tablets (23mg): ethylcellulose, hydroxypropyl cellulose, lactose monohydrate, magnesium stearate, and methacrylic acid copolymer, Type C. The reddish color film coating includes ferric oxide, hypromellose 2910, polyethylene glycol 8000, talc, and titanium dioxide.

Orally disintegrating tablets ODT (5 mg, 10 mg) - discontinued: carrageenan, mannitol, colloidal silicon dioxide, and polyvinyl alcohol. The 10 mg tablet contains yellow iron oxide (synthetic) as a coloring agent.

Distributed by Eisai Inc., Nutley, NJ 07110.

Common questions about Aricept

What drugs can help improve or slow down memory loss?
Drugs used to improve or slow down memory include prescription medications (e.g., cholinesterase inhibitors like donepezil) and over-the-counter products like ginseng and nootropics. Continue reading
Can Aricept be stopped abruptly?
No, you should not stop taking Aricept (donepezil) suddenly without consulting your healthcare provider. Abruptly discontinuing Aricept may cause a worsening of Alzheimer’s disease symptoms. Continue reading
When is the best time to take Aricept (donepezil)?
The manufacturer recommends taking Aricept (donepezil) in the evening just before bedtime to reduce side effects such as nausea, vomiting, and dizziness. Continue reading
How long does it take for Aricept to work?
Aricept (donepezil) usually takes 4 to 6 weeks before you can tell whether it is helping, and some people need up to 3 months. A few people notice small changes in the first 2 to 3 weeks. The medicine needs about 15 days to build up to a steady level in the body, and most people do not reach their full dose until at least week 6. Continue reading
How does Aricept work?
Aricept belongs to a class of drugs called cholinesterase inhibitors, which work by increasing acetylcholine levels to support better brain function. However, it does not change the progression of dementia itself. Continue reading

Related medicines

Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
General medicine information Consumer-friendly language Source: Drugs.com

Content is provided for education and is not medical advice. See our medical disclaimer. Source page medically reviewed by Melisa Puckey, BPharm on August 25, 2026.