Thyroid Cancer / Nodules & Hyperthyroidism Expert Forum
Increase T3 or T4
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Questions in the Thyroid forum are answered by Mark Lupo, MD. Topics covered include Goiter, Graves Disease, Hyperthyroid, Parathyroid/Calcium Problems, Thyroid Cancer, Thyroid Nodules/Cysts, Thyroiditis, Thyroid & Pregnancy, Thyroid Stimulating Hormone (TSH), Thyroid Tests, and Thyroid Surgery.

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Increase T3 or T4

Thank you for the explanation of why a TSH is high while T3/T4 are in range.  That really helps me.  I am taking 25mcg Synthroid.  Endrocrinologist said increase T4 but when I try it  causes my heart to race.  Naturopath says increase T3.
TSH 7.28  (Ref .4 - 4.5)    Free T4 1.1  (Ref .8 - 1.8)  Free T3  2.4  (Ref 2.3 - 4.2)
97953_tn?1193367871
Optimize TSH (0.5-2.5 range) w/ T4 alone (slowly increasing the dose given sensitivity), then consider adding T3 (which is usually more likely to increase heart rate than T4)
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