There are folks that need to titrate up more slowly than others. Its not written in stone that you must start the full dose now. give your body more time to adjust. Make sure to call your md and ask. Call the rebif nurse, and tell them your having this trouble.

They want to keep you on the meds, and if your miserable, its more than likely that you wont. They will back up and keep you comfortable.

Hang in there.