Doxycycline
"I have suffered from acne for 10 years (currently 25). I have cystic type acne, lots of blackheads and oily skin. I have been to multiple dermatologists throughout the years and tried countless products, both OTC and prescription. I have had amazing results with my current regimen which includes doxycycline, Aczone topical gel applied at night and Panoxyl face wash (OTC). The doxycycline made a difference right away! I still got maybe 1 cystic type zit a month for the first 3 months and now basically not at all. The Aczone and Panoxyl help combat the blackheads and tiny zits the antibiotics doesn't. The biggest downfall is the nausea. I highly recommended this for those with cystic acne and be sure to take after meals. I am happy to finally be acne free!"