What is the best thing for ibs?

See integrative doc: First make sure of diagnosis. See a gastroenterologist. Then go see an integrative or functional medicine physician, s/he will look at your lifestyle, diet, stress, etc and, after testing, come up with a plan for you. Find docs in your area: http://integrativemedicine.Arizona.Edu/alumni.Html or http://www.Functionalmedicine.Org/practitioner_search.Aspx?Id=117. Have hope, relief is possible.

Notice: Irritable Bowel Syndrome (IBS) is diagnosed in conjunction with your Dr and you may explore a range of options to treat / manage / obtain relief. See http://patient.info/health/irritable-bowel-syndrome-leaflet for a sensible structured approach. The 'best thing?' Pause, take time to eat, notice your body, how you are feeling, cultivate awareness ... from here gradually modify food choices, habits.