Hello, and thanks for your medical question on E Health Forum.
Yes it is possible for the intestines to recover its function.
But this might take considerable amount of time depending on the damage that has been induced.
A upper GI endoscopy and biopsy of intestines can help to know the exact state of the intestines.
You might consult a gastroenterologist , who can perform the tests and advice you accordingly.
I hope this helps.