Can I take Fibre supplements and Metformin together?

Why this happens

Fibre supplements (like psyllium husk or glucomannan) work by soaking up water and forming a gel in your gut. This gel can trap the metformin molecules, slowing down or reducing the amount of medicine that passes through your intestinal wall into your bloodstream.

What you should do

You do not need to stop taking either, but it is best to separate the doses. Try to take your metformin at least 2 hours before or 4 to 6 hours after taking a fibre supplement. Always monitor your blood sugar levels regularly and speak to your doctor if you notice your readings are consistently higher than usual.

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.