I was on Avo for a year. seriously ill post injection for about 6 months.
I was always able to break/prevent the fever with 800 ibuprofen, but I would awaken at night fevered chilled and shivering if I slept more than 6 hours.
So I developed an 800 at time of shot, 800 bedtime, sometimes throwing a dose of tylenol in just to give the liver a change of pace.
Then, I bought advil gelcaps..quick release, quick action. bad move, the drug worked but was out of my system too quickly. relief didn't last till next dose time.
So, my ultimate solution for nightime was 800 tablets (slow to absorb, lasted longer) daytime a combo of 2 gel, 2 tabs.
Just as each of us has our own version of MS, we each find our way around our particular obstacles.
Good Luck, I wouldn't give up on using some effective drug. I'm on Copaxone now..loveit