Does testosterone replacement therapy (TRT) interfere with levothyroxine?
I've had 9 months of TRT injections with the medication (Nebido). My TSH levels have risen from 0.5 (range 0.3-4.2 ulU/ml) to 1.7 then to 2.0. My fatigue and dull headache is back.
I donated blood yesterday due to high red blood count and high haemaglobin, under my Endo's guidance.
My Vitamins were tested and are all ok. Free T3 was 4.4 (2.8-6.8 pool/L range) and Free T4 was 15 (12-22) I read here that this is low
Is there a link between TRT and TSH levels?
I've been taking 100 mcg levo for 1-2 years. My Endo is adamant that 2.0 is ok and binned to increase. I've read her that TSH should be at or under 1.0. Should I add 25 mcg and take 125 mcg?
Could it be the colder weather necessitating a higher daily levo dose during the winter?
All connects gratefully received. Thank you in advance and for all your good work.