Another reason that some drugs work for some people, yet do not work for others, may be the actual hormone that is in the prescription.
Our body's use 2 major hormones to regulated thyroid function: T-3 and T-4. Synthroid, levoxyl, levothyroxine, Oroxine, and others contain ONLY T-4, thyroxine, and have no T-3, tri-iodothyronine. Again, our bodies need BOTH to function properly. Anyone who has had their thyroid removed NO LONGER makes both hormones, and needs to have both replaced on a regular basis. MOST people with true hypothyroidism are no longer producing adequate amounts of BOTH T-4 and T-3, but the majority of physicians DO NOT recognize or acknowledge this, and therefore DO NOT TEST for deficiency of T-3. The TSH blood test checks only for failing T-4 levels, and physicians accordingly prescribe only T-4, thyroxine, and many, many, many patients never REALLY have true thyroid health ever again.
I found that even though I was taking what the lab levels indicated to be adequate amounts of Synthroid, and then levoxyl (which I got as generic levothyroxine) - I still felt like crap much of the time.
As I was researching fibromyalgia, I came across BETTER information on thyroid problems, and asked my doctor to switch me to the natural thyroid hormones contained in Armour THyroid, which is dessicated (dried) pig thyroids, and contains BOTH T-3 and T-4 hormones plus trace elements of other hormones and minerals our bodies need. Since the switch, I have felt tremendously better than I ever did on Synthroid or levothyroxine. (My doctor still orders TSH alone to determine dosage, but I think that is because the insurance company dose not pay for the other tests except for initial diagnosis.)
This is an EXCELLENT website, despite the fact that the author is pretty adamantly against synthetic thyroid drugs, and her presentation is a little chaotic!! If you are willing to read through the pages, and are willing to consider the basic information offered minus the excessive enthusiasm of the author, you will find a treasure trove of thyroid information here: http://www.stopthethyroidmadness.com/
Take the time to read through the entire site, if you would please. It will not be wasted time, especially if you will take thie information with you, find a physician willing to indulge your desire to try something different, and take the time and put up with the inconvenience of being off any thyroid medications for a couple of months to clean out your system and then get started on a proper dosing schedule of natural thyroid hormones, including BOTH T-4 AND T-3 replacement.
I've been on Armour thyroid for about 4 years now - has made a tremendous difference in my life. My physician allows me the latitude to adjust my own dosing according to how I FEEL, rather than what the TSH says - treating symptoms rather than lab valures REALLY is a MUCH SUPERIOR method of maintaining thyroid health.
And my fibromyalgia is also easier to manage now that my thyroid health is in better control.
Sincerely
Tre
(P.S. For those who wonder why doctors would test/prescribe TSH and T-4 only when our bodies need T-3 also, the answer is the power of Big Pharma. Decades ago, As the ability to develop synthetic drugs became more accessible, a pharmaceutical company found the "proper" formula to approximate natural T-4 hormones, and marketed it as THE ANSWER to hypothyroidism. The propaganda distributed to doctors offices and public pharmacies stated that T-4 was shown to be ALL that was needed to re-establish thyroid health, and relieved to FINALLY have something to prescribe to their sick patients, very few doctors offices, clinics, hospitals, etc, conducted their own studies or saw the need to contest the pharmaceutical's claims.
Why would a company market synthetic T-4 only and ignore T-3??? Money, money, money. They can charge a lot more money for synthetic drugs they create than they can for natural substances. Example: even after decades of the availability of Synthroid, people are saying they still pay $25/month - and in lots of cases that's just the co-pay rather than the total cost of the drug. MY Armour thyroid costs between $19 - $23 a month, depending on dosage; and that is the TOTAL cost of the prescription. YES, I HAVE TO PAY THE ENTIRE COST, because my insurance does not cover Armour thyroid, but still, I AM PAYING LESS FOR TOTAL PRESCRIPTION of a natural substance THAN MANY PEOPLE ARE PUTTING OUT FOR COPAY ONLY for a synthetic drug.
What's that say about the companies that make these drugs??? They are making a huge amount of money for often inferior products. No wonder the FDA is being lobbied to outlaw both over-the-counter and prescription natural products. Just saying........