Bisoprolol: uses, dosage and side effects
Bisoprolol is a beta blocker used for high blood pressure, angina and chronic heart failure. It slows the heart and reduces its workload, and it is prescription-only in Ireland. This page explains what bisoprolol is used for, how it is taken, the side effects in the product information, why it must never be stopped abruptly, and how a repeat prescription works.
What bisoprolol is used for
Bisoprolol is used for high blood pressure and heart failure, and also for angina. It is a cardioselective beta blocker: it blocks beta-1 receptors in the heart, which slows the heart rate and reduces the force of each beat, so the heart uses less oxygen and blood pressure falls. In stable chronic heart failure the aim is different and less intuitive. There, bisoprolol is introduced at a very low dose and increased slowly over weeks, because long-term protection from the strain of constant adrenaline outweighs the short-term slowing, and this use has been shown to improve outcomes. It is also used to control the rate in some rhythm disorders. Bisoprolol treats the numbers and the workload; it does not cure the underlying condition, so it is a long-term treatment reviewed by your GP or cardiology team.
Side effects of bisoprolol
The side effects listed in the product information include tiredness, dizziness or light-headedness especially when standing up, a slow heart rate, cold hands and feet, headache, nausea and disturbed sleep or vivid dreams. Some people notice reduced exercise tolerance in the first weeks while the body adjusts. Wheeze or breathlessness can occur in people with airway disease, since beta selectivity is relative rather than absolute. Seek medical help promptly for a pulse that feels very slow along with faintness, for new or worsening breathlessness, for swelling of the ankles that is getting worse, or for fainting. Get urgent help by calling 112 or 999 for chest pain, collapse or severe breathing difficulty. Suspected reactions can be reported to the HPRA through its national system, and you can do that yourself as a patient.
Dosage and how to take bisoprolol
Bisoprolol is taken once a day, usually in the morning, with or without food, and the tablet is swallowed with water. The prescriber sets the dose; in high blood pressure and angina a maintenance dose is reached fairly quickly, while in chronic heart failure treatment begins at a very low dose and is increased in careful steps, with the heart rate, blood pressure and symptoms checked at each step. That slow build is deliberate and should not be rushed. The single most important instruction is not to stop bisoprolol suddenly: abrupt withdrawal can cause a rebound worsening of angina, a rise in blood pressure and, in people with coronary disease, serious cardiac events. If you want to come off it, the dose is reduced gradually under supervision. If you miss a dose, take the next one at the usual time and do not double up.
Is bisoprolol prescription-only in Ireland?
Yes. Bisoprolol is prescription-only in Ireland and no pharmacy can supply it over the counter. The reason is straightforward: the dose has to be matched to your heart rate, blood pressure and kidney and lung function, and the same tablet that helps one person can be unsafe for another with asthma, a slow pulse or a conduction problem in the heart. Treatment is also monitored: blood pressure readings, pulse checks and, in heart failure, symptom review at each dose change are part of the medicine working properly. That is why beta blockers sit behind a prescriber everywhere in the European Union. If you think you may have high blood pressure, a pharmacy or your GP practice can measure it, and diagnosis is made on repeated readings rather than one.
Continuing bisoprolol and getting a repeat prescription
If a GP or cardiology team in Ireland already has you on bisoprolol at a settled dose and your supply is running low, you can ask a doctor to review a continuation of that treatment through our online medical questionnaire. There is no video consultation and no phone appointment: you complete a structured medical questionnaire, a doctor reviews it, and if continuation is appropriate you receive a prescription document by email as a PDF laid out to the Annex of Directive 2012/52/EU. You bring it to any pharmacy with photo identification. There is no PIN code and no national identity number on it. The assessment for a repeat prescription costs 19,90 €. The fee covers the medical assessment, not the issuing of a document. If the doctor declines on medical grounds, the fee is refunded. If you do not supply the documentation the doctor asks for, the fee is not refunded. This route is for continuation only. Starting a beta blocker, changing the dose, or working up a new problem all need a clinician who can examine you. The doctor will ask for your current dose, recent blood pressure and pulse readings and your other medicines, and may decline. Never allow a supply of bisoprolol to run out while you wait, because stopping abruptly is the risk this medicine carries.
Cost and reimbursement in Ireland
Bisoprolol is an old, widely genericised medicine, so it is usually one of the less expensive items on a prescription, but what you pay depends on the strength, the pack and the HSE arrangement covering you. Medical card holders receive prescribed items under the General Medical Services scheme at the charge that applies at the time. Anyone without a card can register with the HSE for the Drugs Payment Scheme, which caps what a person or family pays for approved prescribed items in a calendar month; that cap matters most for people taking several cardiac medicines at once. Ask your pharmacist what your particular combination costs under your arrangement. Charges and thresholds are set by the HSE and change from time to time, so take current figures from the HSE rather than from a commercial page.
Interactions and alcohol
Bisoprolol interacts with several groups of medicines. Verapamil and diltiazem, both calcium channel blockers, add to the slowing of the heart and the reduction in its pumping force, and those combinations are avoided or used only under specialist supervision. Other blood pressure medicines, nitrates and some antidepressants add to the drop in blood pressure. Antiarrhythmic medicines, clonidine, some anaesthetics and certain eye drops containing beta blockers also matter. Beta blockers can mask the warning signs of low blood sugar in people treated with insulin or sulfonylureas, so diabetes control needs closer attention. Tell every prescriber and pharmacist what you take. Alcohol lowers blood pressure further and adds to dizziness, particularly when standing up, so keep it moderate, and take extra care in the first weeks or after any dose increase.
Who should not take bisoprolol
Bisoprolol is contraindicated in acute or decompensated heart failure, in cardiogenic shock, in second or third degree heart block and sick sinus syndrome without a pacemaker, in a markedly slow heart rate or very low blood pressure, in severe asthma or severe chronic obstructive airway disease, in severe peripheral circulatory disorders, in untreated phaeochromocytoma and in metabolic acidosis. Caution is required in milder airway disease, in diabetes with a history of hypoglycaemia, in psoriasis, in thyroid disease where symptoms can be masked, and before general anaesthesia, which is why the anaesthetist must be told. People with reduced kidney or liver function may need a lower dose. This is a summary; the complete list of contraindications is in the leaflet for your product and is a matter for your prescriber.
Generic and brand names
Bisoprolol fumarate is the international non-proprietary name of the active substance, and it is the name recognised in any European pharmacy. In Ireland it is supplied under the substance name by several manufacturers and under brand names, as film-coated tablets in a range of strengths, and some products combine bisoprolol with another agent in one tablet. A combination tablet is not interchangeable with plain bisoprolol, so read the box carefully. Tablet appearance changes between manufacturers; a different colour or shape after a repeat is normally a change of maker, not of treatment, but check the strength printed on the carton against your prescription, because bisoprolol strengths are close together and easy to confuse. On a cross-border prescription the substance is written by its international name with the strength and form.
Pregnancy and breastfeeding
Bisoprolol is not normally recommended during pregnancy. Beta blockers reduce blood flow to the placenta, which can affect the growth of the baby, and they can cause a slow heart rate and low blood sugar in the newborn, so treatment of high blood pressure in pregnancy usually moves to medicines with a longer record of use in pregnancy. If you become pregnant while taking bisoprolol, do not stop it yourself, because abrupt withdrawal is dangerous; contact your GP, cardiologist or maternity service quickly so the change can be made safely. It is not known whether bisoprolol passes into human breast milk, so breastfeeding is generally not recommended during treatment and an alternative is chosen where possible. Anyone planning a pregnancy should raise it at a routine review rather than at the last moment.
Patient information leaflet
The patient information leaflet inside your pack is the authoritative document for the exact bisoprolol product you hold. It gives the licensed indications, the strengths, the full list of side effects with their frequency categories, the interactions, and the warning about not stopping treatment suddenly, which is the part of this medicine people most often get wrong. The HPRA publishes leaflets and the fuller summary of product characteristics for medicines authorised in Ireland, and the same documents are available through the Irish medicines information portal. Read the leaflet for your strength and manufacturer rather than a generic summary, and keep it with the pack for as long as you are taking the medicine. If anything in it differs from what you read here, the leaflet and your prescriber take precedence, and the same applies to anything you read on any other website.
About this page
This page was written by the medical team at MEDINOW Sp. z o.o. and reviewed by lek. Damian Wojno, a doctor registered in Poland, PWZ no. 3211301. He holds a Polish licence to practise; he is not on the register of the Irish Medical Council, and this page does not suggest otherwise. Content verified on 29 August 2026 against the summary of product characteristics and the patient information leaflet published for the Irish market, and against public guidance from the HPRA and the HSE. This page is information, not advice for your particular case, and it is not an advertisement for a prescription medicine. Nothing here replaces an assessment by your own GP or a hospital clinician. If you are unwell and need urgent help, contact your GP, an out-of-hours service, or call 112 or 999.
Is bisoprolol prescription-only in Ireland?
Yes. It is prescription-only, because the dose has to match your heart rate, blood pressure and lung and kidney function, and because treatment needs monitoring. No pharmacy can supply it over the counter.
How long does bisoprolol take to work?
The effect on heart rate begins with the first doses, while the full effect on blood pressure builds over a couple of weeks. In chronic heart failure the dose is increased slowly over weeks and the benefit is judged over months. Tiredness in the first weeks often settles.
What are the common side effects of bisoprolol?
Tiredness, dizziness on standing, a slow pulse, cold hands and feet, headache, nausea and vivid dreams are listed in the product information. Wheeze can occur in people with airway disease. Seek help for fainting, a very slow pulse with faintness, or worsening breathlessness.
Can I drink alcohol while taking bisoprolol?
Alcohol lowers blood pressure further and adds to dizziness, especially when you stand up. Keep it moderate, and be particularly careful in the first weeks of treatment and after any dose increase.
How do I get a repeat prescription for bisoprolol?
If an Irish GP or cardiology team already has you on a settled dose, you can ask a doctor to review a continuation through our online medical questionnaire for 19,90 €. The fee covers the assessment, not the issuing of a document; it is refunded if the doctor declines on medical grounds and is not refunded if you do not supply the documentation requested. Do not let your supply run out, because bisoprolol must not be stopped abruptly.