I came down with IBS/C and thought it was a million different things. Finally realized that I was having terrible problems with both feet. Was born with congential hammer toes, etc, have handicap plates, etc. had to stop working, etc. Was given lots of darvon, darvacett, etc. and then came down with IBS/C. Now when I have to take just a little darvon, I am a TERRIBLE MESS. NEED all kinds of stuff...milk of magnesia, etc. So that's why I know it is because of that.