Here is a link to a thread that discusses some supplements that help neuro protection. Some of them have been studied and have scientific background that they do help. Many of us, including me, take some/most of these supplements.
I would not take Copaxone and I have been SPMS for about the past 20 or so years. Before that I was RRMS for another 15 years.
In fact, I would like to see all people stop taking the CRABS and then maybe the drug companies would get on the stick and find some drugs that actually work.