Welcome Sun. Never happy to see anyone with MS.

I was on Rebif. No problems but that was me and this is you.

As far as DMD's go, using one is subjective. I think the efficacy of the drug is about 30%. So that means there is a 70% chance of a relapse. At least, that is my take on it.

I don't use any DMD's. I was dx'ed as PPMS after a year and my ms doc said using one is like shooting water.

Rebif has a good 800 number to contact. They want your money so you can always talk about it to their people. Half dose is probably not worth the money spent and your concerns are more valid.

MS and stress go together! So do what is least stressful.