Doxycycline
"I have had cystic acne since I was 18. It became horrible when I turned 22. I started taking doxcy last may after my acne kept coming back worse than before. I was on tetracycline when I was 18 & it went away. But this time around the acne is on a vengence horribly scarring me. If I miss one dose of this medicine I will get a pimple. I am resistant to basically everything under this doxy. I am on 500mg twice a day. It works in due time but recently I will get sick from taking it and vomit. It doesnt matter at the moment if I eat or not it with it. Its sporadic. Its a love hate with this medicine. But if you want clear skin its worth it!"