Byetta and side effects

Hi Dr, Bill I have a question.  What would Reglan, Compazine or any other nausea drugs do to a dosage of Byetta?  Are they contraindicated for this medication?  Would they diminish the effects of Byetta?  I take these now for help with migraines.  i don't know what's going to happen in the first two weeks of trying Byetta, however if these aren't good drugs for Byetta can you think of the best natural remedy?  Many people tout ginger and I'm looking into that.  Also things for motion sickness. What do you think?

                                                      Thanks

                                                      Blythe