The bottom line is that Thyroxine doesn't even remotely have the same effect and make you feel the same, as Armour Thyroid. Standard blood tests for thyroid levels are also woefully inaccurate.
(Although mine have always tested very low since I became ill, this isn't the case for many).
As the `Stop the thyroid madness' website explains,
"The theory was that T4 would convert to the T3 needed for the body. But in nearly ALL patients on T4 meds, the T4 does NOT convert into an adequate amount of T3, leaving you with symptoms that neither you OR your uninformed doctor realize are related to inadequate treatment. In other words, healthy thyroids are NOT meant to rely solely on T4-to-T3 conversion!
But there's even more to the problem: it's called the TSH lab. Around 1973, the TSH lab test was developed. Based on a sampling of several volunteers, a so-called "normal" range was established--.5 to 5.0 (recently lowered to 3.0). But volunteers with a history of family hypothyroid were NOT excluded, leaving us with a range that leans towards being hypothyroid! In fact, the TSH RARELY corresponds to how a patient feels. There is a large majority of patients who have a "normal" TSH, even in the "one" area of the range, and have a myriad of hypothyroid symptoms.
So what's the solution? Patients and their wise doctors are returning to a medication that was successfully used from the late 1800's onward: natural desiccated thyroid hormones, more commonly known as Naturethroid, Erfa's Canadian "thyroid", Armour, etc. They are made from pig glands, meet the stringent guidelines of the US Pharmacopoeia, and gives patients EXACTLY what their own thyroids give them--T4, T3, T2, T1 and calcitonin.
Additionally, patients who are working with certain wise doctors are not dosing by the TSH. Instead, they raise their desiccated thyroid according to three criteria (and not in any particular order): 1) the elimination of symptoms 2) getting a mid-afternoon temp of 98.6 using a mercury thermometer, while maintaining a normal, healthy heart rate, and 3) getting their free T3 towards the top of the range (in the presence of healthy adrenal function).
On a T4-only medication, we have noted that the majority of patients have a less-than-optimal free T3, a mid-afternoon temp lower than 98.6, and/or the continuation of some hypothyroid symptoms for the rest of your life, no matter how high your doctor raises it."
The information given on how low thyroid output and low adrenal output relate to each other is also very helpful.
As the `Stop the thyroid madness' website and book explains,
"Cortisol is needed to distribute thyroid hormones to your cells, and if you are not making enough cortisol from sluggish adrenals, your blood will be high in thyroid hormones, producing the above symptoms. Adrenal support is used to give back to your body what your adrenals are not, which in turn allows the thyroid hormones to get to your cells."
This author has done such a brilliant job explaining these issues to patients. I can't recommend her website or book more highly and I thank her for taking the time to put this book together to help others.
In addition to this book I'd also recommend reading Dr David Brownstein's book Iodine: Why you need it, Why you can't live without it if you have any type of thyroid problems. (Iodine is an essential element. Although its main function is in the production of thyroid hormones by the thyroid gland, other organs in the body have a need for iodine in order to function normally. When thyroid levels have been shown to be low, this may be an indication that an iodine loading test may be a good idea.) Vitamin D testing is also an essential part of any thyroid treatment program, as the new version of this book explains.
If you'd like to read a bit more about some of the causes of thyroid problems and how these can be worked on in order to reduce or stop your thyroid problems then the book by Dr Sherry Rogers titled Detoxify or Die is also essential reading.
Dr Sherry Rogers explains that there are environmental, nutritional and metabolic causes of thyroid problems.
Environmental: Food allergies, chemical and mould toxicities, goitrogens from soy and other foods, and high levels of fluoride (especially in drugs such as Prozac), heavy metal and chemical contamination from things such as cadmium, mercury, PCBs, dioxins and phthalates (plasticisers). Cadmium can lower T3 but not raise TSH. It can lower thyroid function in a way that leaves the TSH test completely normal.
Nutritional: Low levels of the nutrients needed to make thyroid hormone such as selenium, zinc and iodine. Poor cell membrane function can cause thyroid problems as can high levels of trans fats.
Metabolic: Candida overgrowth and the use of NSAIDs (Celebrex and ibuprofen), can lead to a `leaky gut.' This in turn triggers the body to make antibodies that attack and destroy its own thyroid gland. This can be tested for using a thyroid antibodies test.
Other causes include virally caused damage to mitochondria, pituitary gland problems and chronic infections.
Jodi Bassett, The Hummingbirds' Foundation for Myalgic Encephalomyelitis