Diuretics ('water tablets')Common tablets
furosemide, Furosemide, Bumetanide, Co-amilofruse, Amiloride, Spironolactone
Why are they used?
Diuretics remove unwanted fluid from the body to stop it collecting in the legs and lungs (when heart isn't pumping effectively).
How do they work?
Diuretics assist the movement of certain particles in the blood as they pass through the kidneys causing more urine to be passed. Some diuretics remove a substance in the blood called potassium from the body. It is therefore common to be prescribed diuretics that do not do this or to be prescribed potassium supplements.
What to look out for
- Your blood pressure may lower shortly after taking the medication. This may cause you to feel light headed for a short while, but the body will adapt to this after about a week. If you ever lose consciousness, you must contact your doctor.
- You will also notice that shortly after taking the tablet, you will start to pass more urine. It is therefore advisable to ensure you are not too far away from a toilet for the 3 hours following taking the tablet.
- Take the tablets with food if possible as this can also help prevent the possible feeling of nausea.
- Occasionally the diuretics may work too well and remove too much water. If this occurs it will make you feel very dry and thirsty. Please continue to take the medication but inform your doctor.
Special instructions
Take care when standing up suddenly.