Hi. Thanks for your query. Noted the history about your mother having loose stool and vomiting for several weeks, each time going to hospital, being told the same thing over and over , she is exhausted, dehydrated and sick, not traveled outside. My thoughts and advise: Since the problem is lingering for a lot of time, and you have taken her to the hospital every time she has attack, you should have posted the reports. First of all, get her stool tested for three consecutive days. Blood: CBC, culture and sensitivity, Sugar, thyroid are very important. Colonoscopy and biopsy. Make a list of the foods and beverages that instigate or enhance her problems and stop these altogether. Furthermore the treatment of any medical disease diagnosed like tuberculosis, thyroid, diabetes and so if at all detected. Continue probiotics and multivitamins as advised by your Doctor. A 5 day course of an antibiotic and metronidazole helps in some cases.