"last year i stated taking medication (not doxycycline) and i helped very much. however, if stopped working as well before i saw any real results. i&#039;ve been on doxycycline for about a month and my skin is the worst it&#039;s been in a long time (mainly on chin and cheeks) nothing i&#039;m doing is getting rid of it and it&#039;s leaving big scars. after reading this i have decided i&#039;m not going to give up yet. if they don&#039;t work within 2 months i will seek further advice and help."