I was on minocyline for about a year for acne. At one point I went to my dentist because I had a bunch of gray spots on my gums. He told me it was from the minocycline and that I was lucky it hadn't spread to my teeth, yuck! It's permanent. I still have gray gums 10 years later.

If I really believed it would do great things for MS, I'd live with no teeth .

I just wanted to let people in on this not so pretty side effect. It seems like every med gives me problems though, so take this with a grain of salt. I guess it's a minor thing compared to some of the alternatives.