In March it was reported that the US Army were taking up a brain injury drug which was in early trials. The company behind the drug are Neuren. A link to their website is attached.
The company are developing some interesting products relevant to MS (see under Technology and Development Pipeline). Many of the drugs are neuro-protective, but they also have a peptide in development to repair / regenerate neurons. Perhaps an effectiveness test in the future will be how much our brain volume has increased.