I have had chronic diarrhoea for three days now. It is not food poisoning. I am taking 100 mcg of levo which is self prescribed from the 75 mcg my endo had me on. I felt 'better' when I started the increase 3 weeks ago; I no longer know the true meaning of that word. I ahve lost 7 lbs in that time too. Has the thyroxine found a high level and is now making me hyper in my digestion/body etc?