It works for so many things but you're right on yeast etc. It will take a little while to cure everything going on internally, but with me nothing ever came back. It was gone for good. My husband tells me when to sit down and rest. He reminds me I'm sick - what a gem. I want to keep going even though I hurt and Even though I know I can't I haven't reached the acceptance stage yet. Keep thinking I'll be better if disb insurance would settle my financial problems. Need to crawl back into bed today - human barometer weather!! Gray and cold, everything hurts.