These include medicines for constipation, diuretics (water tablets), amphotericin B (used for fungal infections) and ACTH (used to test if your adrenal glands are working properly) • Medicines for cancer (chemotherapy) • Medicines for heart problems, including problems with your heartbeat • Medicines to stop the rejection of organs after a transplant such as ciclosporin • Diuretics (water tablets) such as furosemide • Medicines which can increase the amount of potassium in your blood such as spironolactone, triamterene, amiloride, potassium salts, and heparin (for thinning blood) • Steroid medicines for inflammation such as prednisolone • Calcium supplements • Allopurinol (used to lower the uric acid in your blood) • Procainamide (for heart rhythm problems) • Colestyramine (for reducing fat amounts in your blood) • Carbamazepine (for epilepsy).