gastrointestinal

As adjectives the difference between gastrointestinal and gastroenteric

is that gastrointestinal is of or pertaining to the stomach and intestines while gastroenteric is gastrointestinal.

As an adjective gastrointestinal

is of or pertaining to the stomach and intestines.

As a noun incretin is

(biochemistry) a gastrointestinal hormone causing an increase in the amount of insulin released from the beta cells of the islets of langerhans after eating, even before blood glucose levels become elevated.

As an adjective gastrointestinal

is of or pertaining to the stomach and intestines.

As a noun sunitinib is

an oral small molecule drug used in the treatment of renal cell carcinoma and imatinib-resistant gastrointestinal stromal tumour.