Hi there, I would appreciate some advice with regards to my journey with t3 only. I am on 125mcg with suspected resistance. For such a large dose things have been surprisingly uneventful. I do feel better than before however. Im inclined to believe my tolerance of this dose implies i do have impaired sensitivity to th however as of yesterday i did have a fast pulse of 100. Although i did decrease my dose to 100mcg, and had a glass of milk 30 mins beforehand which may have reduced the intake further. I also took the dose too early as i took it at a time when my cortisol is low. Could this be responsible for the fast resting heart rate and why my symptoms felt worse. Or perhaps im overmedicated, any advice ?