Hi Gayle @gaylewroc -- sorry I'm replying a bit late, but I only just saw this thread. I'm also on Clofazimine now.
I've been on it for 4 weeks so far. Yes it does seem to cause increased stomach issues -- I do have more heartburn (acid stomach). It is meant to be taken WITH food. And I take a probiotic with fibre every second day to try to balance the effects of antibiotics on the gut. But really for the heartburn all I can do is chew more antacid tablets.
Like other TB drugs it does have a range of side effects -- don't freak out too much when you read about them, most seem to be fairly mild.....so far. (It's actually an old leprosy drug, but fights other mycobacteria too).
Good luck with all this, Annie