I have been on NDT since Feb 2015 one grain. I was taking 1 1/4 for a month April but started struggling so reduced back to 1 grain. I was worried taking to much because I have lost 1 1/2 stone since Christmas and the last month constant heartburn, nothing on endoscopy, now taking supplements for low stomach acid, constant anxiety. The results today are TSH 0.295 (0.270-4.2) FT4 11.7 (12-22) FT3 4.5 (3.1-6.8) Results before treatment last October (same ranges) TSH 4.560 FT4 13.78 FT3.5. Does FT4 drop because on NDT? Any advice on the results would be appreciated.