I'v been on Doxycycline for about 2 1/2 months and I don't seem too see much change I was on Minacycline? about a year ago and that worked great for me, but my mom made me stop after a few months and my skin got worse. I went back on it last summer but I think I was immune to it, so I'm begining to think Doxycycline wont work now either... although my back and chest have seemed to improve. If anyone has or is using Doxycycline, please tell me the results you got and when you began to see them or any information at all. Thank yall so much.