I used a scientific approach to my selection, I based it on convenience. I travelled a lot and didn't want to haul around extra cargo, so I went with Avonex. I got over the side effects quickly and it seems to be working so I have stuck with it for several years.

I believe some people can get meds at a reduced cost from the pharma and variouse other organizations. But I imagine there is a strict income criteria that not everyone will qualify for assistance.