SN instructed patient / caregiver that bumetanide ( trade names Bumex or Burinex ) is a loop diuretic to treat heart failure. It is often used in people in whom high doses of furosemide are ineffective. Instructed that is used to reduce extra fluid in the body ( edema ) caused by conditions such as heart failure, liver disease, and kidney disease. This can lessen symptoms such as shortness of breath and swelling in your arms, legs, and abdomen. Bumetanide is a “ water pill ” ( diuretic ) that causes you to make more urine. This helps your body get rid of extra water and salt. Dizziness may occur as your body adjusts to the medication. Tell your doctor or pharmacist promptly, If this effect persists or worsens. To reduce the risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position. Many people using this medication do not have serious side effects. It may cause a serious loss of body water ( dehydration ) and salt / minerals. Tell your doctor right away if you have any of these unlikely but serious side effects such as: muscle cramps, weakness, unusual tiredness, confusion, severe dizziness, fainting, drowsiness, unusual dry mouth / thirst, nausea, vomiting, fast / irregular heartbeat, unusual decrease in the amount of urine.