"i&#039;ve dealt with moderate acne for ten years.  last year, i started getting constant cystic acne on my back (one or two at all times) and some on my face. the ones on my back were really scarring.  i went on minocycline for three months and i have been off of it for about three months. the cystic acne completely disappeared and has not returned.  i still get the occasional pimple, but it is not cystic and much less frequent than it was in the past.  i am very pleased that the medicine cleared up my skin and that i no longer need to take it.  even if my acne returns in the future (i hope it doesn&#039;t), the past six months of clear skin is easily worth the time and money."