Doxycycline
"I had reached a point where my severe rosacea was extremely painful.  I had contacted my doctor and begged for a prescription for amoxicillian.  That was an antibiotic I was on for another condition, and cleared up my rosacea for a couple of weeks.  The doctor said doxycycline  would be better for my acne.  



I had not known at the time what I was suffering from was severe rosacea .  my derm at the time diagnosed me with severe cystic acne.  After 1 year of trial and error with numerous antibiotics, she put me on isotretinoin (sp).  I took claravis, apprx 80 mg for 10 months.  After being on a 2 wk course of doxy, my face has been clear for 11 months now."