28 year old male here. T3 and T4 have been low for the past few years, always with normal TSH (1.5-2.5ish). A few months ago I started using 1/2 grain NDT + 12.5 mcg cytomel BID. I wasn't able to afford lab work during these months but for the last month I've just been taking 25 mcg cytomel BID. I just got lab work done and my FT3 is 3.8 (2.3-4.2), my FT4 is 0.8 which is a bit under normal, TSH 0.01. My ultimate goal is to get to the root of the hypothyroidism, which is likely due to years of bulimia, adrenal dysfunction, inflammation, MTHFR compound heterozygous, etc. But in the meantime, I'm feeling like I'd prefer to be on NDT as opposed to cytomel to provide myself with the spectrum of thyroid hormones. Although T3 is clearly much more important, T4 actually serves a function as well.
What do you guys suggest? Switch to a higher dose of NDT? My HR is up a bit from high 50s low 60s to 70s and 80s. Crushing fatigue, which was most distressing symptom, is quite improved.
Any and all advice would be greatly appreciated!