"had sudden deep cyst acne - getting on face, arms, and even backside. i could not understand it- doctor prescribed minocycline and everything cleared up immediately.  unbelievable results with not one pimple since.  thanks to your notes, i now know why i have been dizzy and sick feeling lately.  i want to come off- also do not want discolored teeth as side effect too but will go back on immediately, if needed."