I was on epiduo and doxycyxline 100 mg this Time last year and it cleared my mild to moderate acne beautifully within 3 months! About 10 months later my zits slowly came back and I was switched to ziana and minocycline. Today at my derm appointment I was switched from ziana back to epiduo because I made little to no progress with ziana )): !!! My derm said she didn't know if it would work but I'm hoping it works for me just as good as the first time around. Has anyone ever went back to an old regimen or topical? Does anyone know how well it works? And any advice to avoid an initial breakout with epiduo? I would love to know your experience! Thanks ((: