It is hard to impossible to know if Copaxone is modifying the course of RRMS. That is especially true for a newly diagnosed patient with no history without a treatment. That is the norm today.
When my wife came down with RRMS there was no treatment. So we could form an opinion whether it helped - it seemed to reduce the frequency and severity of her MS.
Copaxone worked well until it stopped - Copaxone treatment failure.
Tysabri is even better. Four years without an exacerbation, at least until recently. A recent "exacerbation" was extremely mild, and perhaps not really an exacerbation since an MRI showed no changes.
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