My feet burn all the time, so bad i couldn't sleep. After seeing 17 specialists I give up. Couldn't find or help with GI problems. Finally out of despair I went back to fabulous Chinese acupuncturist. The burning is subsiding as I am learning how to eat correctly. Must start easy with rice mush (coats intestine) boiled or streamed vegetables. This will take a week. Only thing to drink always is warm water. Soothes the body. For herbs and roots there are licorice root and milk thistle capsules. I've just ordered mine. When liver is forced to work it makes feet and legs burn. Try new food at lunch only so liver has time to work on it. Last meal is 6pm. Best of health.