Comprimés de Timolol - un bêta-bloquant
Revu par Sid DajaniDernière mise à jour par Michael Stewart, MRPharmSLast updated 10 août 2023
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Timolol is used to treat a number of different conditions. If you are unsure why you are taking it, speak with your doctor.
Continue to take the tablets regularly unless your doctor tells you to stop.
The most common side-effects are feeling tired, cold fingers or toes, disturbed sleep, and a slow heartbeat.
At a glance
Timolol tablets are a beta-blocker medicine used for various heart conditions, high blood pressure, and to prevent migraines.
It works by slowing down your heart's activity, reducing blood pressure, and preventing fast heart rhythms.
You will usually take one or two doses each day, at the same time each day.
Do not stop taking timolol suddenly, as your doctor may want to reduce your dose gradually.
Common side effects include headache, feeling sick, dizziness, tiredness, and light-headedness.
If you have diabetes, timolol can mask the symptoms of low blood sugar.
Dans cet article:
Video picks for Traitement et prévention des maladies cardiaques
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About timolol tablets
Type de médicament | Un médicament bloquant les récepteurs bêta-adrénergiques (souvent appelé bêta-bloquant) |
Utilisé pour | Hypertension; arrhythmias; angina; to protect the heart; to prevent migraines |
Disponible sous forme de | Comprimés |
Timolol belongs to the group of medicines known as bêta-bloquants. It is a medicine which is used to treat several different medical conditions. It works on the heart and blood vessels.
Timolol slows down the activity of your heart by stopping messages sent by some nerves to your heart. It does this by blocking tiny areas (called beta-adrenergic receptors) where the messages are received by your heart. As a result, your heart beats more slowly and with less force. This allows the pressure of blood within your blood vessels to be reduced if you have hypertension artérielle (hypertension), and helps to prevent abnormally fast heart rhythms (arrhythmias). Because your heart is using less energy, this helps to reduce chest pain if you have angine de poitrine. Timolol can also help to protect the heart following a crise cardiaque.
Timolol is also prescribed to help prevent migraines. It can be helpful for people who find other treatments for reducing the number of migraine attacks unsuitable.
Timolol is also available in combination with medicines known as diurétiques (often referred to as 'water tablets'). These combination tablets are only used for the treatment of high blood pressure.
Eye drops which contain timolol are available for the treatment of glaucoma. There is a separate medicine leaflet available called Timolol eye drops for glaucoma which gives more information about this.
Before taking timolol tablets
Retour au sommaireSome medicines are not suitable for people with certain conditions, and sometimes a medicine may only be used if extra care is taken. For these reasons, before you start taking timolol it is important that your doctor or pharmacist knows:
Si vous êtes enceinte, essayez d'avoir un bébé ou allaitez.
Si vous avez de l'asthme ou tout autre trouble respiratoire.
Si vous avez des problèmes avec le fonctionnement de votre foie, ou avec le fonctionnement de vos reins.
Si vous avez une pression artérielle basse ou une mauvaise circulation.
Si vous avez un taux de sucre dans le sang élevé (diabète sucré).
Si vous avez un problème de peau appelé psoriasis.
Si vous avez une affection provoquant une faiblesse musculaire, appelée myasthénie grave.
Si on vous a dit que vous avez un rythme cardiaque lent ou un bloc cardiaque (un rythme cardiaque lent et irrégulier).
If you have been told you have chest pain called Prinzmetal's angina (caused by spasms of your heart's blood vessels).
Si vous prenez 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 les médecines complémentaires.
Si vous avez déjà eu une réaction allergique à un médicament, ou si vous avez déjà eu une autre réaction allergique grave.
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How to take timolol tablets
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 timolol and will provide you with a full list of the side-effects which you may experience from taking it.
Take timolol exactly as your doctor tells you to. It is usual to take one or two doses each day. Your doctor may prescribe you a small dose initially (5-10 mg). As this may mean taking half a tablet, the tablets are scored so that they can be divided into two. If necessary, your doctor will increase your dose slowly over the next few weeks. Increasing your dose slowly allows your doctor to make sure that you have the dose that helps your condition but prevents unwanted side-effects.
You can take the tablets before or after your meals, but try to take your doses at the same time of day each day, as this will help you to remember to take timolol regularly.
If you do forget to take a dose, take it as soon as you remember unless your next dose is due. If your next dose is due then take the tablet which is due but leave out the forgotten one. Do not take two doses together to make up for a forgotten dose.
Tirer le meilleur parti de votre traitement
Retour au sommaireEssayez de respecter vos rendez-vous réguliers avec votre médecin. Cela permet à votre médecin de suivre vos progrès.
Treatment with timolol can often be long-term. Continue to take the tablets unless your doctor tells you to stop. Stopping treatment suddenly can cause problems in some people, so your doctor may want you to reduce your dose gradually if this becomes necessary.
If you are due to have an operation or dental treatment, it is important to tell the person carrying out the treatment that you are taking a beta-blocker. This is because some anaesthetics may increase the risk of unwanted effects.
If you drink alcohol, ask your doctor for advice about taking timolol and alcohol. Alcohol will add to the blood pressure-lowering effect of timolol and so may not be recommended for you.
If you buy any medicines, check with a pharmacist that they are suitable for you to take. Some medicines (including some cough, cold and flu remedies) may not be.
Your doctor may give you dietary and lifestyle advice about eating a healthy diet, not smoking, and taking regular exercise. If so, it is important that you follow the advice you are given.
If you have diabetes, timolol can block the symptoms of low blood sugar. Your doctor will advise you about this.
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Can timolol tablets 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 most common ones associated with timolol. You will find a full list in the manufacturer's information leaflet supplied with your medicine. The unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following continue or become troublesome.
Timolol side-effects | Que puis-je faire si je ressens cela ? |
Maux de tête | Buvez beaucoup d'eau et demandez à votre pharmacien de vous recommander un antidouleur approprié. Si les maux de tête persistent, informez votre médecin |
Sensation de malaise (nausée), maux d'estomac | Optez pour des aliments simples - évitez les repas riches ou épicés |
Feeling dizzy, tired or light-headed (especially when getting up from a sitting or lying down position) | Getting up more slowly may help. If you begin to feel faint, sit down for a few minutes until the feeling passes. Do not drive and do not use tools or machines until you feel better |
Feeling breathless, cold hands or feet, tingling feelings, disturbed sleep, mood changes, impotence, eyesight problems, slow heartbeat | Parlez à votre médecin si l'un de ces symptômes devient gênant |
Si vous ressentez d'autres symptômes que vous pensez être dus aux comprimés, parlez-en à votre médecin ou à votre pharmacien pour obtenir des conseils supplémentaires.
How to store timolol
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.
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 immédiatement 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 Yellow Card website.

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
Can I take timolol if I am taking other medicines?
You should tell your doctor or pharmacist about any other medicines you are taking, including those bought without a prescription, as well as herbal and complementary medicines. This is because some medicines may not be suitable to take with timolol.
What should I do if I forget to take a dose of timolol?
If you forget a dose, take it as soon as you remember, unless your next dose is due. If your next dose is due soon, then take only the scheduled dose and skip the forgotten one. Never take two doses together to make up for a missed dose.
Will I need to take timolol for a long time?
Treatment with timolol is often long-term. You should continue taking the tablets unless your doctor advises you to stop. If it becomes necessary to stop, your doctor may suggest reducing your dose slowly, as stopping suddenly can cause problems for some people.
Are there any drinks or foods I should avoid while taking timolol?
If you drink alcohol, you should ask your doctor for advice. Alcohol can combine with timolol to lower blood pressure further, so it might not be recommended for you. Otherwise, you can take the tablets before or after meals.
What should I do if timolol makes me feel dizzy or light-headed?
If you feel dizzy, tired, or light-headed, especially when standing up from sitting or lying down, try getting up more slowly. If you feel faint, sit down for a few minutes until the feeling passes. You should not drive or use tools or machines until you feel better. If these feelings continue or become troublesome, speak with your doctor or pharmacist.
What should I do with timolol tablets that I no longer need or that have expired?
Do not keep out-of-date or unwanted medicines. You should take them to your local pharmacy, which will dispose of them for you safely.
Lectures complémentaires et références
- Manufacturer's PIL, Timolol maleate 10 mg tablets; Mylan, The electronic Medicines Compendium. Dated September 2019.
- Médicaments Complets BNF 89e Édition; Association Médicale Britannique et Société Royale Pharmaceutique de Grande-Bretagne, Londres.
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About the authorView full bio

Michael Stewart, MRPharmS
Medicine Leaflet Review Manager – Contractor, Pharmacist
BPharm (Hons), MRPharmS
Michael is a community pharmacist practicing in the Midlands and South Yorkshire with more than 20 years’ experience advising on medicines and medical conditions. He has a strong background in healthcare training, having produced and delivered training courses for pharmacy teams and staff of residential care settings, including nurses. He has also contributed to pharmacy advisory boards for the management of low acuity conditions in the community.
About the reviewer

Sid Dajani
Sultan Dajani qualified at the London School of Pharmacy in 1994 and became the youngest elected member of the Royal Pharmaceutical Society council since its founding in 1842.
Historique de l'article
Les informations sur cette page sont rédigées et examinées par des cliniciens qualifiés.
Next review due: 9 Aug 2026
10 août 2023 | Dernière version

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