Can I take Bisoprolol and Fibre supplements together?

Why this happens

Fibre supplements (like psyllium or methylcellulose) can act like a sponge in the stomach. They can bind to the bisoprolol or create a physical barrier that prevents the medicine from passing through the gut wall into your bloodstream.

What you should do

You do not need to stop taking fibre supplements, but you should separate the timing. Take your bisoprolol at least 2 hours before or 2 hours after taking your fibre supplement to ensure the medicine is properly absorbed.

Important precautions

Asthma or chronic obstructive pulmonary disease (COPD)

Bisoprolol can cause your airways to narrow, making it much harder to breathe or triggering a severe asthma attack. It is usually avoided if you have a history of wheezing or asthma.

Concurrent medication use

Fibre supplements can bind to other medicines and prevent them from being absorbed. You must take other medicines at least 1 hour before or 2 to 4 hours after taking your fibre supplement.

Diabetes

Bisoprolol can mask the warning signs of low blood sugar (hypoglycaemia), such as a fast heartbeat or tremors. You will need to monitor your blood sugar more closely.

Food and drink warnings

Alcohol

Alcohol can increase the blood pressure-lowering effect of bisoprolol, which may make you feel dizzy, lightheaded, or faint, especially when you first start taking it or when your dose is increased. It is best to keep your alcohol intake within recommended limits and see how the medicine affects you before drinking.

Water and non-alcoholic fluids

It is essential to drink plenty of water (at least 200ml or a full glass) when taking fibre supplements. Taking them without enough liquid can cause the supplement to swell and block your throat or oesophagus, and may lead to constipation.

Using other medicines

Taking multiple medicines? Our Medicines Interaction Checker helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.

Disclaimer

This information is for general educational purposes only and should not be relied upon as a substitute for professional medical advice. Always consult your GP, pharmacist, or another qualified healthcare professional before making decisions about your medications. Individual circumstances may vary, and only a healthcare professional who knows your medical history can provide personalised guidance.