my tsh score came in at .84, and i feel quite fatigued. however, when my score was higher last April, at 2.18, I also felt very fatigued. Then, my Dr. put my dosage higher, and i initially felt better, but the last few weeks, I ve been feeling very tired. For several years i was on .05 synthroid, and last April that was bumped up higher to 75 or .075. I often feel quite cold and do have weaker muscles due to Post-polio syndrome, but wonder how much the thyroid problems are having. Should my dose be higher, lower, or should I switch to the more natural thyroid, instead of synthroid. My Dr. asked the lab to check my T3, but the lab wouldn t do that. I m so tired, I can hardly function. Help me please. Dianne