Bisoprolol

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Bisoprolol fumarate is a cardioselective beta-1 adrenoceptor blocker widely prescribed in the United Kingdom for the treatment of hypertension (high blood pressure), chronic stable angina pectoris, and chronic heart failure with reduced left ventricular ejection fraction.

It is one of the most commonly prescribed beta-blockers in UK primary care, with millions of prescriptions dispensed annually through the NHS.

Bisoprolol works by selectively blocking the effects of adrenaline and noradrenaline on beta-1 receptors in the heart, reducing heart rate, cardiac output, and myocardial oxygen demand.

This page provides a comprehensive clinical overview of bisoprolol, covering its mechanism of action, licensed indications, dosing for each condition, side effects, safety warnings, drug interactions, and how to obtain a prescription in the UK.

All information follows current guidance from the British National Formulary (BNF), NICE, and the MHRA.

Important safety information about bisoprolol

Before starting bisoprolol, note the following critical safety points. Bisoprolol is a prescription-only medicine (POM) in the UK.

• Do not stop bisoprolol suddenly. Abrupt withdrawal can cause rebound tachycardia, worsening angina, or acute heart failure decompensation. Always reduce the dose gradually under medical supervision.
• Bisoprolol may mask the symptoms of hypoglycaemia (low blood sugar), particularly a fast heartbeat. Patients with diabetes should monitor blood glucose more frequently.
• Use with caution in asthma or COPD. Although cardioselective, bisoprolol may still trigger bronchospasm, especially at higher doses.
• Inform your anaesthetist that you are taking bisoprolol before any surgical or dental procedure.

What are beta-blockers

Beta-blockers are a class of medicines that block the effects of adrenaline (epinephrine) and noradrenaline (norepinephrine) on beta-adrenergic receptors.

There are two main subtypes: beta-1 receptors, found predominantly in the heart, and beta-2 receptors, found in bronchial smooth muscle, blood vessels, and the liver.

Non-selective beta-blockers (such as propranolol) block both subtypes, which can cause bronchospasm and peripheral vasoconstriction.

Cardioselective beta-blockers (such as bisoprolol and atenolol) preferentially block beta-1 receptors, providing cardiovascular benefits with a lower risk of respiratory and peripheral side effects.

Beta-blockers have been a cornerstone of cardiovascular medicine since their introduction in the 1960s.

They are used to treat hypertension, angina, heart failure, arrhythmias, and to reduce cardiovascular mortality after myocardial infarction.

Bisoprolol is one of the most beta-1-selective agents available, making it a preferred choice in patients who require a beta-blocker but have relative contraindications to non-selective agents.

How bisoprolol works

Bisoprolol fumarate competitively blocks beta-1 adrenoceptors in the sinoatrial node, atrioventricular node, and ventricular myocardium.

This produces several clinically important effects: a reduction in resting and exercise heart rate (negative chronotropy), a decrease in the force of myocardial contraction (negative inotropy), slowed atrioventricular conduction (negative dromotropy), and suppression of renin release from the juxtaglomerular cells of the kidney.

In hypertension, these effects combine to reduce cardiac output and suppress the renin-angiotensin-aldosterone system (RAAS), producing a sustained reduction in blood pressure.

In angina, the reduction in heart rate and contractility decreases myocardial oxygen demand, allowing the coronary blood supply to meet the reduced demand and preventing ischaemic chest pain during exertion.

In chronic heart failure, the mechanism of benefit is more complex.

Heart failure is characterised by chronic sympathetic nervous system activation, which initially compensates for reduced cardiac output but ultimately contributes to adverse cardiac remodelling, arrhythmias, and disease progression.

By attenuating the toxic effects of sustained catecholamine exposure on the myocardium, bisoprolol allows reverse remodelling, reduces heart rate, improves ventricular filling, and decreases the risk of sudden cardiac death.

Landmark trials including CIBIS-II have demonstrated a significant reduction in all-cause mortality with bisoprolol in chronic heart failure with reduced ejection fraction.

Clinical evidence and NICE guidance

Hypertension

NICE Guideline NG136 (Hypertension in adults) recommends beta-blockers as a fourth-line option for hypertension in most patients, after ACE inhibitors or ARBs, calcium channel blockers, and thiazide-like diuretics.

However, beta-blockers may be considered earlier in specific clinical situations, including concurrent angina, heart failure, atrial fibrillation requiring rate control, or in women of childbearing potential where other first-line agents are contraindicated.

When a beta-blocker is indicated for hypertension, bisoprolol is a commonly chosen agent due to its long half-life allowing once-daily dosing and its high beta-1 selectivity.

Angina

NICE Clinical Guideline CG126 (Stable angina) recommends a beta-blocker or a calcium channel blocker as first-line antianginal therapy.

Beta-blockers are preferred in patients with concurrent hypertension or heart failure.

Bisoprolol reduces the frequency and severity of angina episodes by lowering heart rate and myocardial oxygen demand during exertion.

It is effective as monotherapy or in combination with other antianginal agents including long-acting nitrates and calcium channel blockers (dihydropyridine type).

Chronic heart failure

NICE Guideline NG106 (Chronic heart failure in adults) recommends a beta-blocker licensed for heart failure as part of the standard treatment regimen for all patients with heart failure with reduced ejection fraction (HFrEF), alongside an ACE inhibitor (or ARB) and a mineralocorticoid receptor antagonist.

Bisoprolol is one of three beta-blockers with a heart failure licence in the UK (alongside carvedilol and nebivolol).

The CIBIS-II trial demonstrated a 34% reduction in all-cause mortality with bisoprolol compared with placebo in NYHA class III to IV heart failure, establishing it as a life-saving therapy.

Dosing and administration

Hypertension and angina

The usual starting dose is 5 mg once daily in the morning, swallowed whole with water.

The dose may be increased to 10 mg daily based on blood pressure or angina response.

The maximum recommended dose for hypertension is 20 mg daily, though 10 mg is sufficient for most patients.

Blood pressure and heart rate should be monitored regularly during dose adjustment.

Chronic heart failure

Initiation of bisoprolol for heart failure must be performed under specialist supervision during a period of clinical stability (no hospitalisation for decompensation within the preceding 4 weeks).

The dose is up-titrated very gradually: 1.25 mg daily for week 1, 2.5 mg for week 2, 3.75 mg for week 3, 5 mg for weeks 4 to 7, 7.5 mg for weeks 8 to 11, and 10 mg as the target maintenance dose from week 12 onwards.

Each increase should only proceed if the previous dose is well tolerated, with no significant worsening of heart failure, hypotension, or bradycardia.

Renal and hepatic impairment

No dose adjustment is required for mild to moderate renal or hepatic impairment. In severe renal impairment (creatinine clearance below 20 mL/min) or severe hepatic impairment, the maximum daily dose is 10 mg and careful monitoring is advised.

Missed doses and withdrawal

If a dose is missed, take it when remembered unless it is close to the next scheduled dose. Do not take a double dose. Never stop bisoprolol abruptly.

If discontinuation is necessary, taper the dose over at least 1 to 2 weeks to avoid rebound effects including tachycardia, hypertension, and worsening angina or heart failure.

Side effects of bisoprolol

Common side effects

The most frequently reported adverse effects include tiredness, fatigue, dizziness, headache, and cold extremities (cold hands and feet).

These are a consequence of reduced cardiac output and peripheral blood flow and typically improve after the first week of treatment.

Gastrointestinal symptoms including nausea, vomiting, diarrhoea, and constipation may also occur.

Uncommon and rare side effects

Uncommon effects include bradycardia (slow heart rate), hypotension, orthostatic dizziness, bronchospasm, muscle weakness, and sleep disturbances including vivid dreams.

Bisoprolol is less lipophilic than propranolol and causes fewer central nervous system effects, but insomnia and nightmares can still occur in susceptible individuals.

Rare effects include depression, erectile dysfunction, dry eyes, exacerbation of psoriasis, and alopecia. Allergic reactions including rash and pruritus have been reported rarely.

When to seek medical advice

Contact your GP or NHS 111 if you experience persistent dizziness, fainting episodes, increasing breathlessness, ankle swelling (suggesting worsening heart failure), a resting heart rate below 50 beats per minute, or cold and painful extremities.

Seek emergency care by calling 999 if you experience chest pain, severe breathlessness, or collapse.

Report any suspected adverse reactions via the MHRA Yellow Card scheme at yellowcard.mhra.gov.uk .

Warnings and precautions

Asthma and COPD

Although bisoprolol is cardioselective, beta-1 selectivity is not absolute, particularly at higher doses. Bronchospasm may occur in patients with asthma or COPD.

Bisoprolol is contraindicated in severe asthma and severe COPD.

In patients with mild to moderate airway disease, it may be used with caution at the lowest effective dose, with respiratory function monitored and a reliever inhaler available.

Diabetes

Beta-blockers may mask the tachycardia that is a key warning sign of hypoglycaemia. Sweating, a non-adrenergic symptom, is not affected.

Patients with diabetes should be advised to monitor blood glucose more frequently, particularly during initiation and dose changes. Beta-blockers may also slightly impair glucose tolerance.

Peripheral vascular disease

Beta-blockers can worsen symptoms of peripheral arterial disease and Raynaud syndrome by reducing peripheral blood flow. Bisoprolol is contraindicated in severe peripheral circulatory disturbances.

Surgery

Inform your anaesthetist before any surgical procedure that you are taking bisoprolol. The drug may interact with anaesthetic agents and reduce the cardiovascular response to surgical stress.

In most cases, bisoprolol should be continued through the perioperative period, but the anaesthetist will make this decision.

Pregnancy and breastfeeding

Bisoprolol is not routinely recommended during pregnancy. Beta-blockers reduce placental perfusion and may cause fetal bradycardia, hypoglycaemia, and intrauterine growth restriction. If treatment is essential, close fetal monitoring is required. Bisoprolol is excreted in breast milk; breastfeeding is not recommended.

Drug interactions

Bisoprolol should not be combined with non-dihydropyridine calcium channel blockers (verapamil and diltiazem) due to the risk of severe bradycardia, heart block, and hypotension.

Caution is required with other heart-rate-lowering agents including digoxin, amiodarone, and ivabradine.

Concomitant use of clonidine requires careful management, as concurrent withdrawal of both drugs can cause rebound hypertension; bisoprolol should be stopped several days before clonidine withdrawal.

NSAIDs (such as ibuprofen and naproxen) may reduce the antihypertensive effect of bisoprolol. Concurrent use of antidiabetic agents may potentiate the hypoglycaemic effect and mask warning symptoms. Your prescriber will review your full medication list before starting bisoprolol.

How to get a bisoprolol prescription in the UK

Bisoprolol is a prescription-only medicine (POM) in the UK. Your GP will assess your cardiovascular risk, blood pressure, heart rate, and any coexisting conditions before prescribing.

For heart failure, initiation is typically performed by a cardiologist or heart failure specialist nurse, with ongoing prescribing transferred to primary care once the dose is stable.

Authorised online prescribers registered with the GPhC may prescribe bisoprolol for hypertension or angina following a structured consultation, provided appropriate clinical information is available.

All UK prescriptions are dispensed by registered pharmacies.

The standard NHS prescription charge in England is currently 9.90 pounds per item; prescriptions are free in Scotland, Wales, and Northern Ireland.

Lifestyle and cardiovascular health

Bisoprolol is most effective as part of a comprehensive cardiovascular risk management strategy.

NICE recommends lifestyle modifications alongside pharmacological treatment: maintain a healthy weight, eat a balanced diet low in saturated fat and salt, engage in regular physical activity (at least 150 minutes of moderate-intensity exercise per week), stop smoking, limit alcohol consumption, and manage stress.

Blood pressure monitoring at home can help track treatment response and is encouraged by most GP practices.

When to seek urgent medical advice

Contact your GP or NHS 111 if you experience new or worsening breathlessness, persistent ankle swelling, palpitations, chest pain, or a very slow heart rate.

Seek emergency care by calling 999 or attending A&E if you develop severe chest pain, sudden breathlessness at rest, collapse, or loss of consciousness.

Report adverse reactions via the MHRA Yellow Card scheme at yellowcard.mhra.gov.uk .

Sources

• Bisoprolol Fumarate 5 mg Tablets, Summary of Product Characteristics (EMC)
• Bisoprolol fumarate, British National Formulary (BNF)
• NICE NG136: Hypertension in adults
• NICE CG126: Stable angina
• NICE NG106: Chronic heart failure in adults
• Bisoprolol, NHS
• MHRA Yellow Card Scheme