Timolol Tablets

What are timolol tablets?

Timolol is a beta-blocker used in tablet form to treat cardiovascular conditions. It works by slowing the heart rate and reducing blood pressure, thereby decreasing the heart’s workload. It is only available on prescription, and it can also come combined with bendroflumethiazide, a diuretic, to treat high blood pressure[1]. 

For timolol eye drops, visit this page. 

What are timolol tablets used for?

Timolol tablets are prescribed for[1]: 

• High blood pressure (hypertension) 

• Chest pain (angina) 

• Prevention of heart attacks in people who have already had one 

• Prevention of migraine attacks 

How do timolol tablets work?

Timolol blocks beta-adrenergic receptors in the heart and blood vessels. This[1]: 

• Slows the heart rate 

• Reduces the force of heart contractions 

• Lowers blood pressure 

• Improves blood flow and reduces oxygen demand in the heart 

Who can take timolol tablets?

Timolol tablets are suitable for adults, including the elderly (with dose adjustments). You should speak to your doctor first if you have[1]: 

• Asthma or chronic lung disease 

• Severe heart conditions (e.g. heart block, cardiogenic shock, unstable heart failure) 

• Low blood pressure 

• Circulatory problems (e.g. Raynaud’s phenomenon) 

• Metabolic acidosis 

• Phaeochromocytoma (unless treated) 

• Allergies to timolol or other beta-blockers 

Please tell your doctor or pharmacist about any conditions you may have or medication you take before you start treatment, and always follow the instructions in the Patient Information Leaflet[2].

How do you take timolol tablets?

To take timolol tablets correctly, you should swallow whole with water and take at the same time each day. You can take them with or without food. Do not chew or crush them. For your first dose, your doctor may recommend taking it at bedtime as it can make you feel dizzy. If you don’t feel dizzy on the first dose, you can start to take your medicine in the morning. If you’re taking timolol tablets twice a day, you’ll usually take one in the morning and one in the evening[1].  

What is the typical dosage of timolol tablets?

Timolol comes as 10mg tablets. Typical doses vary by condition[1]: 

• Angina: Start on 5mg twice a day but can be increased up to 30mg twice a day if needed 

• High blood pressure (hypertension): Start on 10mg once a day or split into 5mg twice a day, but can be increased up to 60mg a day if needed 

• Heart attack prevention: Start on 5mg twice a day, but it can be increased to 10mg twice a day if needed 

• Migraine prevention: 10mg to 20mg daily (1 to 2 tablets) 

Always follow your pharmacist or doctor’s instructions. The dose may be adjusted based on your response. 

Can you stop taking timolol tablets?

Do not stop abruptly. Sudden withdrawal can worsen your condition. Your doctor or pharmacist will advise on tapering the dose gradually[1]. 

What do you do if you take too much timolol tablets?

Seek immediate medical help by calling 111. Symptoms of overdose may include[1]: 

• Slow heart rate 

• Low blood pressure 

• Breathing difficulties 

• Fainting or collapse 

What do you do if you forget to take timolol tablets?

If you forget to take your medicine, take it as soon as you remember, but if it’s nearly time for the next dose, skip the missed one. Do not double up to make up for the dose you missed[1]. 

How do you store timolol tablets?

Follow these storage guidelines[1]: 

• Store below 25°C 

• Keep in original packaging 

• Keep out of sight and reach of children 

• Do not use after the expiry date 

What medicines can’t you take with timolol tablets?

Let your doctor or pharmacist know if you take any of the following[1]: 

• Other beta-blockers  

• Heart medicines (e.g. digoxin, amiodarone, verapamil) 

• Blood pressure medicines (e.g. clonidine, hydralazine, baclofen) 

• Diabetes medicines (e.g. insulin, metformin) 

• Antidepressants (e.g. fluoxetine, paroxetine) 

• Parkinson’s medicines (e.g. levodopa) 

• Barbiturates, antipsychotics, NSAIDs, rifampicin 

• Cold and nose or sinus congestion tablets (including those you can buy in a pharmacy) 

• Asthma or COPD medicines 

• Allergy medicines (e.g. ephedrine, noradrenaline, or adrenaline) 

• CYP2D6 inhibitors (e.g. quinidine) 

• Anaesthetics (before surgery) 

• Some herbal remedies, such as cod liver oil, hawthorn and garlic, as they can cause low blood pressure 

Always inform your doctor or pharmacist about all medications and supplements you take before you start a new medicine, and follow the instructions in the Patient Information Leaflet[2]. 

What are the side effects of timolol tablets?

Timolol may cause a range of side effects, from mild to serious. Common or less serious side effects include[1]: 

• Dizziness or tiredness 

• Cold hands and feet 

• Nausea, vomiting, or diarrhoea 

• Stomach pain  

Rare, but more serious side effects include[1]: 

• Breathing difficulties 

• Chest pain or heart attack 

• Stroke symptoms 

You should contact your GP if you experience any of these symptoms. In rare cases, the medicine may cause a serious allergic reaction (anaphylaxis). You should call 999 or visit A&E immediately if you believe this is happening[1]. 

Symptoms of anaphylaxis include[1]:  

• Difficulty breathing  

• Tightness in throat and chest  

• Swelling of the tongue or throat  

• Feeling faint or dizzy  

• Blue/grey skin or lips  

• Loss of consciousness 

If you experience any side effects, including those not listed, you are encouraged to report them via the Yellow Card Scheme or contact your doctor, pharmacist, or nurse. This information is intended as a summary for general awareness and does not replace professional medical advice. 

The information provided in the side effects section is not a comprehensive list of all possible side effects associated with this medication. For a complete list of side effects, please refer to the Patient Information Leaflet (PIL) provided with your medication or consult your healthcare professional[2]. 

Frequently asked questions about timolol tablets

Can I drink alcohol while taking timolol? 
Avoid excessive alcohol – it may increase side effects[1]. 

Is timolol safe for diabetics? 
Use with caution – timolol can mask low blood sugar symptoms[1]. 

Can I drive while taking timolol? 
Yes, unless you feel dizzy or tired[1]. 

Is it safe during pregnancy or breastfeeding? 
Not recommended unless essential. Discuss with your doctor[1]. 

Can children take timolol tablets? 
No, they are not suitable for children[1]. 

What should I do before surgery if I take timolol? 
Inform your doctor or anaesthetist – you may need to stop timolol beforehand[1]. 

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For the official NHS guide to timolol tablets, visit their website.