t4 t3 question

[casper514]

simple question ive been on t4 for the last 2months i was about to hop on a third vial of t4 but cant find some no more, and i have t3 in my possesion can i finish with t3???

[casper514]

any1 ???

[castiron]

I believe that t3 is much more effective than t4. The two main hormones produced by the thyroid are L-triiodthyronine (T3), and L-thyroxine (T4). T4 is the hormone which the thyroid produces the lions share of, and is converted by a deiodinase enzyme into what is known as T3 (2).

When a person is involved in a calorie-restricted diet, the body produces less deiodinase enzyme, and hence produces less T3. When our bodies lack the effects of T3 (the more potent of the two hormones) our BMR decreases. An abundance of T4 is still present, however, T4 simply isnt potent enough to maintain the high metabolic rate we seek while trying to burn fat.