Stomach Bypass Surgery My Friend Had Gastric Bypass (stomach Stapling) Surgery And Now Has Constant Problems With Dumping, Suggestion?

My friend had gastric bypass (stomach stapling) surgery and now has constant problems with dumping, Suggestion? - stomach bypass surgery

"Dumping" is when, shortly after a meal, the stomach of a large number of landfills and undigested food is so explosive pooping. Does anyone know of medication, exercise, further surgery or anything that can help?