Unfortunately I'm SPMS and there is nothing out there yet.
Biotin is being trialed at the moment and is sounding promising.

mssociety.org.uk
think this is the address
hope I haven't broken the rules

Have you tried the MS society site.
Sorry but not sure your allowed to put the full site address on here.

Yes Biotin is a vitamin, it has just had phase three trials and I think the results are now published.
It has been red hot the talk about it by MSers with the progressive form of MS.
100 mg x 3 a day seems to be getting good results.
It can be bought from American suppliers.
Have a good read about it and decide yourself.

To all inquiries on medications; good luck in your search for the golden Goose; every medication has a different effect on each person, your body is different and the side effects are not the same: I have been lucky that I have been on the same basic treatments for thirty years and have been very slow at progression.I hope you can find something that works and that you have very little problems!