Such a lot of wisdom on this site--so glad to have found you because my Docs know next to nothing about Thyroid issues.
After two years on 100mcg Levo (2014-16) lost hair and 1/2 left eyebrow and gained weight I could not lose. Gym caused energy crashes which put me in bed for days at a time.
June/2016.. TSH .004.
FT4 1.3 (.7-1.8)
FT3 2.75 (2.3-4.2) RT4 20 (8-25). Seemed a problem converting T4 to FT3 so went to 90mg Armour but energy crashes and weight gain continued Then I started palps and 'hot head' symptoms.
Oct 2016 TSH <.004
FT4 1.0 (.7-1.8)
FT3 4.2 (2.3-4.2) RT4 14 (8-25)
I cut Armour to 45mg and a month later FT3 had plunged to 2.64 and I had god-awful insomnia and fatigue. I started iron supp. and digestive enzymes.
So now I am at 65 mg NatureThroid and today started adding 10mcg Cytomel with plans to increase it, if needed) after Jan 9 labs are drawn because in the past I felt best when T3 was high.
Any suggestions for me? Is the RT3 causing weight issues? Is it possible I might do best on T3 only?
Oh and a.m. Cortisol (blood) was 10.5 (4-22). Ferritin 56 (13-150) and Iron 66 (30-150) am supplementing to raise those last two.