)
Unfortunately, Reglan is notorious for its
side effects. If these are too much for you (and they sound like they are), ask the doctor to switch you to Domperidone. The drug is NOT available in the US, but is first-line treatment for GP pretty much all over the world.
You can find Canadian pharmacies which sell to the US (prescription required) through PharmacyChecker.com, which is recommended by the AARP.