I am currently on 30mcg daily of T3 only. I have never managed to get above that dose due to symptoms of pooling and stomach issues. My most recent bloods at endo showed my TSH at 8 and that was only 2 hours after taking 20mcg of T3. Endo wants to add an additional 10mcg of T3 and 25mcg of Levo. He wasn't listening when I told him I cant get above 30mcg of T3. It's similar to when I was on Levo I could never get above 100mcg despite still be Hypo! My ferritin was 44 and I know I need to get this much higher. I have bought some NDT and would like to work up slowly whilst working on iron and adrenals. Just not sure how best to change from one to the other?