The very first time I had IVSM, it worked great, but not until after a couple of weeks at home.
The Neuro, who gave me this treatment while I was in the hospital, was the head of Neuro dept at hospital, and I believe that her expertise and combo of meds and treatment, led to my miraculous recovery.
She gave me IVSM, along with valium, Lioresel, Vitamin K and a 3 week taper of prednezone, to alliviate the stress of IVSM on my body. And it worked.
She retired and my next Neoro, about 3 years later, gave me IVSM for a new exacerbation....but, he didn't think all that other stuff/meds were necessary.

So guess what, I was completely miserable while taking the ivsm....and it didn't work at all.

(the jerk didn't know jack)