I was a product manager for a version of Doxy. Throw it away, if you haven't responded yet, its not going to happen. Your stomach will be happy.
Accutane is the best choice, but it's very toxic and needs to be run for 6 months.
Have you checked your estrogen blood levels? That could be your cause of acne, and If they are out of whack, there is nothing that will work.
Nothing better than a jacked body from juice. And not taking your shirt off because of backne.