The ginger is a good idea, as are any kind of dry snack like crackers. Nausea is common in the opiate naive and 15 mg is a large dose if not time release. Could you ask for something smaller or a time release ( MS Contin ) type? I am currently on 30 mg MS Contin x 3 daily but started at 10 mg. x 3 years ago. I have been stable at this dose for several years. I did have nausea in the beginning but it passed after a while.