Spironolactone
"I'm a 20 year old female. I've always had mild acne, usually in the forehead, temple and chin areas. It was something makeup could always cover. About 8 months ago, I went on Skyla IUD. My periods were irregular and I started getting hormonal cystic acne. I had at least two bumps on my face on any given day. About 2 months ago, I went to my dermatologist with the problem and he prescribed me spironolactone. I noticed a different after two weeks of the medicine. Two months later I am 100% free of cystic acne, and other acne as well! I only get 1-2 small pimples around my period. The only side effect I have is constant urination, which on top of my chronic UTIs, is a little bit of a hassle. Therefore, I take it at bedtime if I need a bathroom"