Doxycycline
"I have been on Doxycycline for 7 and a half weeks.  It says it takes 6-8 weeks to work and that is absolutely true.  I still have acne right now but its definitely clearing up in this week.  I made the mistake of touching my face a lot and picking at my acne which will not help it clear up.  I am taking one tablet of doxycycline 100mg a day with Clearasil foam wash twice a day with Aczone in the morning and Epiduo at night.  Just be patient and it will work in 6-8 weeks."