<unk> (oral) is a loop diuretic that is FDA approved for the treatment of edema associated with congestive heart failure, hepatic and renal disease, including nephrotic syndrome. There is a Black Box Warning for this drug as shown here.  Common adverse reactions include hypotension, hyperuricemia, hypochloremia, hypokalemia, nausea, and azotemia.
Bumetanide 
Amiloride
Conivaptan
Tolvaptan
Furosemide 
Torsemide 
Chlorothiazide 
Phenacemide