<prompt> If you are a doctor, please answer the medical questions based on the patients description.Dear DoctorMy mum has congestive heart failure and has been taking as a diuretic Frusemide 40mg daily. Just recently the nurse at the heart failure clinic added in Spironolactone 12.5mg daily but the Frusemide dose is the same. Is it normal that 2 different diuretics are prescribed to be taken concurrently and also will this have any reaction with the Candesartan that she takes as well? How often must her urea electrolyte levels be checked now?Thankyou for your help.  <response>: Hi, If your mother doesnt have kidney failure, it is a good idea to prescribe Spironolactone and Furosemide together. Spironolactone will not let to a big Chat Doctor. It is Ok to take them together with Candesartan. I would advise you to check electrolytes once monthly, after 3 months, if they are stable, then you can check it once in 3 months. Hope I could help nourishing you good health In case of further questions dont hesitate to ask 