What medications are prescribed to gastroparesis patients?

Domperidone. There are few medicines available that speed up gastric emptying. Domperidone is the most useful and is not available for sale in the USA. Metoclopramide (reglan) can be used, but has serious neurological side effects. The e-mycin drugs can be used , but often tolerance builds quite quickly.
Reglan (metoclopramide) The one that I see most commonly used is Reglan (metoclopramide) (Metoclopamide), there are other including the Macrolide antibiotic erythromycin. You would be best off discussing with a gastroenterologist, Best of luck!