"believe it or not, i&#039;ve been on doxycycline for just about 1.5 years now. i really didnt have any serious acne as a teen but once i turned 25 for some reason it blew up! i tried everything but everything only seemed to make it angry lol so on doxycycline i went. it is like a miracle for me as far as effectiveness it clears my skin 100%. so why didn&#039;t i give a 10 on the review? because i&#039;ve attempted to stop taking it a few times and it only takes about 2-3 days for my acne to return with a vengeance!  my body breaks out like crazy so bad if i don&#039;t take it. it definitely makes you pay if you stop taking it lol"