"i was on a 16 week course with 30mg/day the first month &amp; then 50mg/day the remainder of the time. at first it got a lot better, then it got a lot worse - which is to be expected. it took so long as to the 14th week to really see a big change and now i&#039;ve just finished the full 16 weeks and my skin is better than ever. there are still some spots that need to be healed but other than that i&#039;m amazed. 
my doctor explained to me that the medication keeps working in your body for 8 weeks after you&#039;ve stopped taking the pills &amp; when you&#039;re on them some people&#039;s skin is so sensitive it&#039;s like glass &amp; therefore for some people the pills really work its wonders after you&#039;ve stopped them. so don&#039;t give up. also, aquaphor is lifesaver for dry lips."