Donépézil pour la démence
Aricept
Revu par Sid DajaniDernière mise à jour par Michael Stewart, MRPharmSDernière mise à jour 29 déc. 2022
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Donepezil helps ease the symptoms of dementia in Alzheimer's disease.
Take one dose a day, at bedtime.
Your doctor will want to check on your progress regularly, so try to remember to keep your clinic appointments.
En un coup d'œil
Donepezil is a medicine for dementia associated with Alzheimer's disease.
It can help with symptoms like thinking and memory, but does not cure dementia.
Take one dose every day just before bedtime, with or without food.
Common side-effects include feeling sick, diarrhoea, and headache.
Do not drink alcohol or take 'over-the-counter' medicines without checking with a doctor or pharmacist.
If you forget a dose for more than a week, speak with your doctor before restarting.
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About donepezil
Type de médicament | An anti-dementia medicine (an acetylcholinesterase inhibitor) |
Utilisé pour | Symptoms of dementia associated with Alzheimer's disease |
Aussi appelé | Aricept®; Aricept Evess® |
Disponible sous forme de | Tablets, melt-in-the-mouth tablets and oral liquid medicine |
Donepezil is prescribed for people who have démence which is associated with Alzheimer's disease. Dementia is a condition of the brain which causes a gradual loss of mental ability. This includes problems with memory, understanding, judgement, thinking and language. Other problems also commonly develop, such as changes in personality and changes in the way a person interacts with others in social situations.
Donepezil is not a cure for dementia, but it can help with symptoms, particularly those which affect thinking and memory. It works by increasing the level of a natural chemical called acetylcholine. This is a chemical which allows nerve cells in the brain to communicate with each other, and it is known that people with dementia have low levels of it.
Donepezil will be prescribed by a doctor who is a specialist. If you are a caregiver, please read this leaflet on behalf of the person who is receiving donepezil.
Before taking donepezil
Retour au sommaireSome medicines are not suitable for people with certain conditions, and sometimes a medicine can only be used if extra care is taken. For these reasons, before you start taking donepezil it is important that your doctor knows:
If you have a heart condition, such as an irregular heartbeat.
If you have any problems with your breathing, such as asthma or chronic obstructive pulmonary disease (COPD).
Si vous avez des problèmes avec le fonctionnement de votre foie.
If you have ever had any of the following: a stomach ulcer, a fit (seizure), or any problems passing urine.
Si vous prenez ou utilisez d'autres médicaments. Cela inclut tous les médicaments que vous prenez et qui sont disponibles à l'achat sans ordonnance, ainsi que les médicaments à base de plantes et complémentaires.
Si vous avez déjà eu une réaction allergique à un médicament.
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How to take donepezil
Retour au sommaireBefore you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about donepezil, and it will also provide you with a full list of the side-effects which you could experience from taking it.
Your caregiver will help you to take your tablets/medicine exactly as your doctor tells you to. Take one dose every day just before bedtime. It is usual to be prescribed 5 mg daily to take initially, although your dose could be increased to 10 mg daily after the first month. Donepezil can be taken either with or without food.
If you have been given the tablets that melt in the mouth, place the tablet on your tongue and allow it to disintegrate in your mouth before you swallow. You may find it helps to have a drink of water before and afterwards.
If you have been supplied with donepezil liquid medicine (1 mg/ml), you will also be given a dosing spoon with which to measure out your doses. If you are taking a 5 mg dose, fill the spoon to the 5 ml line; if you are taking a 10 mg dose, fill the spoon to the 10 ml line.
If you forget to take a dose, do not worry, just take your dose on the following day as normal. Do not take two doses together to make up for the forgotten dose. If you forget to take donepezil for more than a week, talk with your doctor before you start to take it again, as you may need to re-start your treatment on a lower dose.
Tirer le meilleur parti de votre traitement
Retour au sommaireIt can take a few weeks before you feel the full benefit of donepezil. Continue to take your doses every day until you are told otherwise by your doctor. Medicines for dementia are usually continued for as long as they are thought to be having a worthwhile effect on symptoms.
Your doctor will want to check your progress every few weeks to make sure that you are getting benefit from the treatment. Always try to keep these regular doctor's appointments.
Your doctor is likely to advise you not to drink alcohol while you are on this medicine. Drinking alcohol with donepezil can reduce its effectiveness.
If you are having an operation or dental treatment, tell the person carrying out the treatment that you are taking donepezil. This is particularly important if you are going to need a general anaesthetic.
If you buy or take any 'over-the-counter' medicines, always check with a pharmacist that they are safe to take with your prescribed medicines. Some medicines can interfere with the way donepezil works.
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Can donepezil cause problems?
Retour au sommaireAlong with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the more common ones associated with donepezil. The best place to find a full list of the side-effects which can be associated with your medicine, is from the manufacturer's printed information leaflet supplied with the medicine. Alternatively, you can find an example of a manufacturer's information leaflet in the reference section below. Speak with your doctor or pharmacist if any of the following continue or become troublesome.
Very common donepezil side-effects (these affect more than 1 in 10 people) | Que puis-je faire si je ressens cela ? |
Sensation de malaise (nausée) | Stick to simple foods - avoid fatty or spicy meals |
Diarrhée | Buvez beaucoup d'eau pour remplacer les fluides perdus |
Maux de tête | Buvez beaucoup d'eau et demandez à votre pharmacien de vous recommander un analgésique approprié. Si les maux de tête persistent, consultez votre médecin |
Commun donepezil side-effects (ces effets touchent moins de 1 personne sur 10) | Que puis-je faire si je ressens cela ? |
Being sick (vomiting), loss of appetite, tummy (abdominal) discomfort | Stick to simple foods - avoid fatty or spicy meals |
Feeling dizzy, faint, or tired | Be especially carefully if you are using any tools or machines |
Sleeping problems, abnormal dreams or nightmares, common colds, feeling agitated or aggressive, muscle cramps, hallucinations (seeing or hearing things that are not really there), itchy rash, and urine incontinence | Si l'un de ces éléments devient problématique, parlez-en à votre médecin |
Si vous ressentez d'autres symptômes que vous pensez être dus au médicament, parlez-en à votre médecin ou à votre pharmacien pour obtenir des conseils supplémentaires.
How to store donepezil
Retour au sommaireGardez tous les médicaments hors de la portée et de la vue des enfants.
Conserver dans un endroit frais et sec, à l'abri de la chaleur et de la lumière directes.
Once a bottle of donepezil oral solution has been opened, it will keep for two months - after this time, make sure you have a fresh supply.
Informations importantes sur tous les médicaments
Retour au sommaireInformations importantes sur tous les médicaments
Ne prenez jamais plus que la dose prescrite. Si vous soupçonnez que vous ou quelqu'un d'autre avez pris une surdose de ce médicament, rendez-vous au service des urgences de votre hôpital local. Emportez le contenant avec vous, même s'il est vide.
Ce médicament est pour vous. Ne le donnez jamais à d'autres personnes, même si leur état semble être le même que le vôtre.
Ne gardez pas de médicaments périmés ou indésirables. Apportez-les à votre pharmacie locale qui s'en débarrassera pour vous.
Si vous avez des questions concernant ce médicament, demandez à votre pharmacien.
Signaler les effets secondaires d'un médicament ou d'un vaccin
Si vous ressentez des effets secondaires, vous pouvez les signaler en ligne via le Site web de Yellow Card.

Vous n'êtes pas sûr de mélanger des médicaments ?
Vérifiez les interactions possibles entre les médicaments, les compléments et les aliments avant de les prendre ensemble.
Questions fréquemment posées
What is the main purpose of donepezil for someone with Alzheimer's disease?
Donepezil is prescribed to help manage the symptoms of dementia associated with Alzheimer's disease. While it doesn't cure dementia, it can improve problems with thinking and memory by increasing a natural brain chemical called acetylcholine.
How long will I need to take donepezil for to see its full effects?
It can take several weeks for the full benefits of donepezil to become apparent. It's important to continue taking your daily doses as prescribed by your doctor. Medicines for dementia are typically continued as long as they are considered effective in managing symptoms.
Is it important to keep my regular doctor's appointments while on donepezil?
Yes, it is very important. Your doctor will need to check your progress every few weeks to ensure the treatment is beneficial. Always try to attend these regular appointments.
What should I do if I accidentally miss a dose of donepezil?
If you forget to take a dose, you should not worry. Simply take your next dose as normal on the following day. Do not take two doses at once to compensate for the forgotten one. If you miss doses for more than a week, contact your doctor before restarting your treatment, as you might need to begin at a lower dose again.
Are there any specific situations where I should inform a healthcare professional that I am taking donepezil?
Yes, if you are having an operation or dental treatment, you should tell the person performing the treatment that you are taking donepezil, especially if a general anaesthetic will be used. Also, if you buy any over-the-counter medicines, always check with a pharmacist to make sure they are safe to take with donepezil, as some medicines can affect its effectiveness.
How should donepezil oral solution be stored once opened?
Once a bottle of donepezil oral solution has been opened, it will remain effective for two months. After this period, you should make sure to get a fresh supply. All medicines, including donepezil, should always be kept out of the reach and sight of children, and stored in a cool, dry place away from direct heat and light.
Lectures complémentaires et références
- Manufacturer's PIL, Aricept® tablets; Eisai Ltd, The electronic Medicines Compendium. Dated November 2021.
- Manufacturer's PIL, Aricept Evess®; Eisai Ltd, The electronic Medicines Compendium. Dated November 2021.
- Manufacturer's PIL, Donepezil Hydrochloride 1 mg/1 ml Oral Solution; Rosemont Pharmaceuticals Limited, The electronic Medicines Compendium. Dated October 2022.
- Médicaments Complets BNF 89e Édition; Association Médicale Britannique et Société Royale Pharmaceutique de Grande-Bretagne, Londres.
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À propos de l'auteurVoir la biographie complète

Michael Stewart, MRPharmS
Responsable de l'examen des notices de médicaments – Contractuel, Pharmacien
BPharm (Hons), MRPharmS
Michael est un pharmacien communautaire exerçant dans les Midlands et le South Yorkshire avec plus de 20 ans d'expérience dans le conseil sur les médicaments et les conditions médicales. Il possède une solide expérience en formation dans le domaine de la santé, ayant produit et dispensé des cours de formation pour les équipes de pharmacie et le personnel des établissements de soins résidentiels, y compris les infirmières. Il a également contribué aux comités consultatifs de pharmacie pour la gestion des affections de faible gravité dans la communauté.
À propos du critique

Sid Dajani
Sultan Dajani a obtenu son diplôme à la London School of Pharmacy en 1994 et est devenu le plus jeune membre élu du conseil de la Royal Pharmaceutical Society depuis sa fondation en 1842.
Historique de l'article
Les informations sur cette page sont rédigées et examinées par des cliniciens qualifiés.
Prochaine révision prévue : 28 juin 2027
29 déc. 2022 | Dernière version

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