Clindamycin
"Do not take this!! Worst experience of my life. Made my acne 100X worse. Also made my face really red and greasy. Not effective AT ALL. I have no idea why my doctor would prescribe me this. Ruined my life, can't stand being seen like this. 



Try benzoyl peroxide. Much more effective. Dries out your skin, but an easy fix with lotion."