I have gastroparesis too. The best thing to do is eliminate fat and fiber from your diet, and eat several small meals rather than three large ones. Also try not to eat close to going to sleep to prevent morning/middle of the night gastroparesis symptoms. There are various types of treatment. Medicines such as Erythromycin and Reglan can help, but they can also have bad side affects. Taking an acid blocker can along with other treatments can help too. You can also get Botox injections into the pyloric muscle of your stomach through endoscopy, this is helpful to some patients. If these don't help and your symptoms are really severe, you could think about an NJ tube, GJ tube, or J tube. A more permanent solution would be a gastric maker. If you are small and weak, getting a PICC line to help you get stronger before these surgeries would be a good thing to think about. Temple University Hospital in Philadelphia, PA is a great place to go for specialized treatment for this condition.
It's very possible it could make things more difficult for you. The medication probably 'relaxes' the central nervous system effectively 'relaxing' the functioning of the stomach even more than it is normally. In a person with gastroparesis that wouldn't be a good thing.