Beta-blockers
Pindolol
A beta-blocker that steadies the heart and lowers blood pressure.
What is Pindolol?
Pindolol is a beta-blocker used to lower high blood pressure and help angina. It blocks the effect of stress hormones such as adrenaline on the heart, easing its workload. It should not be stopped suddenly, can mask the warning signs of low blood sugar, and is generally avoided in people with asthma.
Education and reference only. This is a plain-language guide to Pindolol — it deliberately contains no doses. Doses depend on the person, the brand and the reason for treatment, and belong with your prescriber. Always check the BNF, the product labelling (SmPC) and follow medical advice.
What it is
Pindolol is a non-selective beta-blocker. In the UK it is used mainly to treat high blood pressure (hypertension) and angina. It has a feature called intrinsic sympathomimetic activity, meaning it does not slow the resting heart rate as much as some other beta-blockers, which can occasionally be useful.
How it works
Pindolol blocks beta receptors, the targets for stress hormones such as adrenaline. This slows the heart and reduces the force of each beat, so the heart works less hard and blood pressure falls. In angina, the gentler workload means the heart needs less oxygen, which helps prevent chest pain.
Company & origin
Originated / developed by: Originally developed by Sandoz (now part of Novartis); available as a generic medicine..
Introduced in the 1970s as a beta-blocker and used in the UK for high blood pressure and angina.
What it treats
Conditions Pindolol is used for
Practical use
How to take Pindolol
General, dose-free guidance — always follow your prescriber's and the leaflet's specific instructions.
- Take it regularly at the same times each day to keep its effect steady.
- Swallow tablets whole with a drink of water.
- Do not stop suddenly; it should be reduced gradually under medical advice.
- Stand up slowly at first, as it can cause dizziness.
- If you have diabetes, monitor for low blood sugar, as the usual warning signs may be masked.
- If a dose is missed, take it when you remember unless the next one is near, then skip it; never double up.
Weighing it up
Advantages & disadvantages of Pindolol
Advantages
- Effectively lowers blood pressure and helps prevent angina.
- Slows the resting heart rate less than some other beta-blockers, which can suit certain people.
- Taken by mouth and available as a low-cost generic medicine.
Disadvantages
- Must not be stopped abruptly, as this can cause a dangerous rebound.
- Can mask the warning signs of low blood sugar in people with diabetes.
- Can tighten the airways, so is used with caution or avoided in asthma, and may cause tiredness or cold hands.
Practical use
Good to know
Do not stop pindolol suddenly, as stopping abruptly can cause a rebound rise in blood pressure or worsen angina. It can blunt the usual warning signs of low blood sugar, such as a racing heart, which matters for people with diabetes. It is generally avoided in people with asthma because it can tighten the airways.
Who should not take it / use with caution
- People with asthma or a history of wheezing triggered by beta-blockers.
- People with a very slow heart rate or certain heart-block problems.
- People with severe or uncontrolled heart failure, without specialist advice.
Monitoring
- Blood pressure and pulse, especially after starting or changing the dose.
- Breathing in people with any tendency to wheeze.
- Blood-sugar awareness in people with diabetes.
Side effects
- Tiredness, cold hands and feet.
- A slow heartbeat and dizziness.
- Sleep disturbance or vivid dreams.
- Masking of the warning signs of low blood sugar.
Key interactions
- Other heart-rate-lowering medicines, such as some calcium-channel blockers, which can slow the heart too much.
- Other blood-pressure-lowering medicines, which add to the effect.
- Diabetes medicines, where the warning signs of low blood sugar can be masked.
Available as: Available as tablets.
Answers
Pindolol: frequently asked questions
Why can't I stop pindolol suddenly?
Stopping a beta-blocker abruptly can cause a rebound rise in blood pressure or worsen angina, and occasionally trigger heart problems. It should be reduced gradually under medical advice.
Can I take it if I have asthma?
Beta-blockers like pindolol can tighten the airways and are usually avoided or used only with caution in asthma. Tell your prescriber if you have asthma or wheeze.
How does it affect low blood sugar?
It can blunt the usual warning signs of low blood sugar, such as a racing heart. If you have diabetes, monitor your levels carefully and be alert for other signs like sweating or confusion.
Why do my hands feel cold?
Beta-blockers can reduce blood flow to the hands and feet, making them feel cold. This is usually mild, but tell your prescriber if it is troublesome.
Will it make me tired?
Tiredness is a common effect, especially at first, and often eases as your body adjusts. Speak to your prescriber if it persists or affects your daily life.
The wider class
About Beta-blockers
Pindolol belongs to the beta-blockers class. For how the class as a whole works, its shared safety principles and monitoring, see the full guide.
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Authoritative sources
- BNF
- NICE CKS
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