I was using Rebif for the first year after diagnosis. It is expensive. Perfect hindsight is that I would not use a DMD.

But there are LOTS of people who differ from my own decisions.

I don't recommend using a DMD but the key word is "I." Everyone has a different take on them.

I am not opposed to people using a DMD. Some of the nicest people on NT will swear by its positive effects.