I was diagnosed with hypothyroidism a year ago and went on 50microgms of Levothyroxine. There was an immediate improvement in my energy level. However I also began to suffer from indigestion, which have almost never had in the past 30 years, and mild diarrohea. Was able to manage by adapting my diet and eating habits - giving up red meat, all rich and spicy foods and reducing on bread. Then 6 weeks ago I had a cold (perhaps coincidental) and the indigestion got much worse. Have lost 5kg and and am having difficulty doing a full days work because of lack of energy. My doctor is having various teats done so waiting for that to process, however it occurs to me that possibly am having a reaction to something in the Levothyroxine tablets and it might help to switch to another medium.