question about T3 and sore achilles

Has anyone had or heard of this issue? Achilles soreness and T3? I've been experiencing this, and it's put a hold on my running... just doing elliptical for my cardio now, which is soooo boring... but dang, my tendon hurts! Just one side... I tapered way down on the t3 (slowly...) and the tendon felt much better, but had to taper back up, and now its pretty sore again.

nope, can't say I've ever heard of a correlation there!

I can tell you when I had my thyroid zapped and we were waiting for things to bottom out so the Dr could adjust my synthroid to a proper level he told me, "if you start to experience any cramping or pain in your arms and legs go to the ER...no wait. just call me.". I never got clairification on why he switched it up. but towards the end my achillies would give me fits when I'd go up stairs or walk to far. I'd have to sit or lay down after just 2 flights of stairs. shit hurt bad. but I got my levels in the sweet spot and it's fine now.

not sure how that pertains to you. but assuming your free T3 levels are naturally fine I bet a large artificial change has something to do with it. unfortunatlly asking a Dr will likely just get the response of, "stop taking it.". which is what I would also say. I never knew how miserable I was literally all the time until I got it fixed.