Eplerenone
"Was on spironolactone for 5 yrs with terrible side effects, name it I had it. The breast soreness is what did it for me, and finally I stumbled into eplerenone after 5 yrs of suffering through spironolactone.
Eplerenone works great for me with minimum or no side effects and the most important thing is that there is NO MORE BREAST PAIN. My blood pressure is under control and my potassium is 4.5.  I incorporated a work out schedule with this medication 2-4 times a week."