There is no medical research to
supportSupport
Support 500 the claim that
armourArmour thyroid is better than synthetic
levothyroxineLevothyroxine
Levothyroxine sodium. Often patients who advocate for
armourArmour thyroid are on doses that over-suppress the
TSHPituitary and tsh
Tsh to the point that they are at risk of heart rhythm problems and bone loss (ie TSH <0.2). This may 'feel' better initially, but I use the analogy of amphetamines -- some people feel better, but most of us know that this is not good for anyone in the long-run. I believe the same is true for over-treatment with any type of thyroid hormone.
That being said, I do have patients on appropriate doses of armour or other T4/T3 combination strategies (I prefer synthroid type meds and adding cytomel which is synthetic T3 -- this gives more ability to adjust the T4 and T3 independently). These patients often report feeling better and as long as the levels can be consistently controlled (esp important with thyroid cancer and pregnant patients) and they have no palpitations or other T3-excess symptoms, then we leave them on the combination.
Fine-tuning dessicated thyroid is often more difficult than using the synthetic products as the number of various dose-strengths is limited.
And here's a question...perhaps you can help me out here. As you know, the percentage of T3 in Armour is something like 20%. That's very high for humans (although normal for pigs). So the high T3 replacement might account for your feeling so much better immediately. But what happens over the long term if the overly high T3 percentage isn't corrected? I'm a little unclear about this aspect of things.
Hope I'm not coming off anti-Armour here. In fact, I'm considering Armour for myself, and am trying to gather as much info as possible before taking the plunge.
I don't have an answer in mind to my question, honest! The percentage issue intrigues me, that's all. And just starting a regime of additional Cytomel, myself, I can only imagine that too much T3 could make one jittery or speedy. What other physiologic effects over time, I don't know. Maybe the good doc could chime in here...
If you gain any further insight, please let me know as I am considering the switch to Armour as well.