That's exactly what Reglan is for - to keep things moving. Constipation can also stop homeostatsis (the medical term for keeping things moving) - it that an unresolved issue as well? It can cause things to back up and nausea as well. Narcotics are the culprit and appropriate countermeasures must be taken. Talk to your nutritionist and get a laxative with a stool softener. Liquid foods can cause serious constipation, surprisingly. Fiber must be added to the diet.