Hi. Thanks for your query. Note the history about your daughter and understood the concerns. Recurrent pain in abdomen, vomiting and loose motions since childhood in a female patient who is now 21 indicates that the problem is related to the gastro-intestinal tract and hence I would advise her the following: Clinical evaluation by a General Surgeon or a Gastroenterologist. Upper GI Endoscopy and colonoscopy. CT scan of the whole abdomen. Blood tests and stool tests. All these things will help for the correct diagnosis which is so much important to have proper guided treatment. On a diagnostic as well as therapeutic basis, it is possible that the proper curative treatment may be given to her. Till then get started on a PPI, Domperidone and antacids along with antacids. Identify the foods , beverages and mental conditions like stress and/or anxiety and stop, avoid all these factors; prevention is better than Cure.