I'll tell you what makes me mad. I've been taking synthroid for years and the dr. still can't get it regulated. Sometimes when it is checked it is high/sometimes low. I asked to go to another brand but he said it "was not indicated". Every time he lowers it I gain 10 pounds within a month without any change in diet/exercise. I know I should change drs, but how do I know anyone else would be better - and how much weight would I gain back while they messed with the dose. I do know when it is high because my heart rate goes up. It's dangerous to leave it high because it can damage the heart. *sigh*