Thanks for all of the helpful comments!
The ingredient is Thyroid Extract USP powder which is the same thyroid extract used in Armour Thyroid tablets. A compounding pharmacist makes up the prescription in store. I could see the powder through the clear capsule.
People who do not adequately convert T4 into T3 and live in a country where NDT or even synthetic T3 is difficult or unobtainable, are really in a terrible place.
Selenium is needed and helps with conversion. Also the proper levels of Iron and Ferritin is also needed to properly metabolize thyroid meds. So trying to get those optimized may help.
NDT is man made manipulated pig thyroid. So the word "natural" is maybe somewhat misleading. And as Barb stated above, the chemical hormone made synthetically (man made) is identical to the human body hormone.
So really there is no truly "natural" thyroid other than what is actually produced by your own thyroid gland. Outside of that, any medication in one way or another is man made.
I guess the moral is don't be freaked out by the word synthetic or beholdened to the word "natural".
I meant to add the conversion to 1 grain of Armour (60 mg) is 50 mcg. I've read different conversion dosages online but my endo prescribed 1 grain (60mg) a day for 50mcg of eutroxsig (generic version of Oroxine). I wasn't absorbing Armour so I switched back to Eutroxsig.
1 grain Armour = 60mg. Armour is made up at compounding pharmacies and is not covered under the PBS. Only by prescription. Google: compounding pharmacy Melbourne.
Dessicated hormones, such as Armour are not available in all countries. Synthetic versions, such as Oroxine are identical to the hormones our bodies produce. Typically, if they aren't working, it's because the dosage isn't right for you or you aren't converting the T4 to T3 adequately. There may also be other things wrong, such as vitamin/mineral deficiencies that may cause inefficient absorption or conversion of thyroid hormones.
The most common of these vitamins are Vitamin B-12, D, and Ferritin, but there may be others.
If you'll post your current thyroid hormone levels, we can help you determine what the problem is and what might be a good solution for you. Please be sure to include reference ranges with any results you post as ranges vary from lab to lab and have to come from your own report(s).
It would also be helpful to know if you have Hashimoto's.