Back in the day, doctors diagnosed hypothyroidism via temperature and ... co2 (I think). The prescription to treat hypothyroidism was grains of Armour Thyroid (

Back in the day, doctors diagnosed hypothyroidism via temperature and ... co2 (I think). The prescription to treat hypothyroidism was grains of Armour Thyroid (Dessicated Thyroid). https://en.wikipedia.org/wiki/Desiccated_thyroid_extract https://en.wikipedia.org/wiki/Desiccated_thyroid_extract https://en.wikipedia.org/wiki/Armour_and_Company https://en.wikipedia.org/wiki/Armour_and_Company Broda Barnes' book, Hypothyroidism: The Unsuspected Illness, tells of the experience of these old-school doctors. https://www.google.com/books/edition/Hypothyroidism/TJXf2ZqoxUIC https://www.google.com/books/edition/Hypothyroidism/TJXf2Zqo... Every batch of Armour Thyroid was tested and standardized. Then the synthetic Synthroid came out, and the sales reps said "this is way better than animal thyroid", never mind that the batches of the synthetic bio-identical T4 were not consistent. Eventually the Armour Thyroid brand was sold a couple times. The new owners reformulated it, and didn't care so much about potency. Armour thyroid is still sold, but it's not like it was when Dr. Barnes was using it. A mix of synthetic T3/T4 is sorta-similar to the old Armour thyroid, and better than the Synthroid. There's nothing worse than having to deal with people who think they know what they're doing.