This drug does work to keep my blood pressure lower. It still fluctuates though. Usually it is now about 136/89 (with the drug). I go to the VA and they gave me this diuretic because they are cheap, but when I go back, I am going to ask to be changed to a different diuretic. I also want to change from metoprolol to carvedilol because carvedilol is licensed for heart failure (metoprolol is not). By the way, I still have spiking blood pressure sometimes (155/107). I quit coffee and am trying to cut out all caffeine (also a mild diuretic).