Doxycycline
"I've started this medication about three weeks ago and so far I'm a bit satisfied. I used this medication before, and this medication is suppose to make your acne ALOT worse because it takes all the bad stuff out of your body. The first 2 weeks were absolutely horrible, a would wake up with 3-5 new cystic pimples on my face and back everyday. When I used this before, I remember that it took me almost  4 months to be totally clear. The thing is to have LOTS of patience, because the first weeks are frustrating. I'm reaching to week 4 and in a year worth of the pills and I'm starting to see improvement on my complexion and less redness, as well as the pimple minimizing. I will put an update once I see dramatic results."