"i&#039;m 18 and i&#039;ve been taking this for 6 months and it&#039;s made a pretty noticeable difference. i used to have a new breakout everyday and now i hardly get a single breakout at all. it cleared my face within a month or so and has kept my face clear the almost the entire time, with one exception. it says not to take this medicine with a calcium and iron supplement and i started taking both and my face started breaking out again! so listen to what the doctor tells you!"