Lyng Pharmacy
Medicines A–Z · Beta blocker

Bisoprolol

A beta blocker · Written by the Lyng Pharmacy team, based on NHS and BNF guidance · Updated August 2026
Also sold asCardicor, Congescor
Type of medicineBeta blocker
Available asTablets
How you get itPrescription only

Bisoprolol slows the heart and reduces how hard it has to work. It is used in heart failure, angina, atrial fibrillation and high blood pressure — and it is one of the medicines where stopping suddenly is genuinely risky.

What it is used for

Heart failure, angina, high blood pressure, and controlling the heart rate in atrial fibrillation. It is also used after a heart attack.

In heart failure the dose is usually started very low and increased slowly over weeks or months — that gradual build is deliberate and important.

How to take it

Once daily, usually in the morning, with or without food. Take it at the same time each day.

Never stop bisoprolol suddenly. Abrupt withdrawal can cause a sharp rise in blood pressure, worsening angina, or in some cases a heart attack. If you want to stop, or side effects are troubling you, speak to your GP about reducing it gradually.

If you miss a dose, take it when you remember on the same day. If it is nearly time for the next, skip it — do not double up.

Side effects

Tiredness, cold hands and feet, dizziness, headache and slow heart rate are the common ones. Tiredness often improves over the first few weeks.

Contact your doctor for:

Beta blockers can mask the warning signs of low blood sugar in diabetes, particularly a racing heart — worth knowing if you use insulin.

They can also worsen asthma, so tell your prescriber if you have it.

Other points

Alcohol adds to the dizziness, especially early on. Get up slowly from sitting or lying.

Tell your prescriber about other blood pressure medicines, verapamil or diltiazem, and medicines for asthma.

Bisoprolol is not usually first choice in pregnancy — speak to your GP if you are pregnant or planning to be, rather than stopping.

Always read the label. This page is general information, not advice for your situation. Doses, warnings and interactions differ between products and between people. Check the leaflet inside your medicine, and ask our pharmacist if anything is unclear — that conversation is free and takes two minutes.

Questions about Bisoprolol?

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Frequently asked questions

Can I stop taking bisoprolol?
Not suddenly. Abrupt withdrawal can cause a sharp rise in blood pressure or worsening angina. Any reduction should be gradual and guided by your GP.
Why does bisoprolol make me tired?
Slowing the heart reduces how hard it works, which commonly causes tiredness at first. It often improves over the first few weeks.
Can I take bisoprolol with asthma?
Beta blockers can worsen asthma. Tell your prescriber — sometimes an alternative is chosen, sometimes a low dose is used with monitoring.
Does bisoprolol affect diabetes?
It can mask the warning signs of low blood sugar, particularly a racing heart. Worth knowing if you use insulin.

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