Just so you know....And I HATE to see doctors do this to their patients......I hope you can handle the Synthroid.....
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the doctor said that they are having trouble maintaining the integrity of the strength of armour - to keep it consistent - and so the pharmacy is having trouble getting it - and so maybe its time for me to try a synthetic replacement.
This is something that has been used by M.D.s since Synthroid was first introduced. The argument has ALWAYS been that the synthetic is better because it is easier to regulate the strength. But if you do some research you will learn that Synthroid is the medication that has had the MOST/ALL of the trouble with consistency. Law suits have been filed against the makers of Synthroid NOT Armour.
When the pharmacy couldnt fill my Rx (so I ordered from my online source that had some left), I called and talked to someone at Forest Labs who assured me that there has been no problems with their medication that they are simply making some changes in the manufacturing process of the larger strengths. The lower strengths are not affected. I would bet they are looking to make the larger strengths smaller pills. They get HUGE and I could see where an elderly person could get a big hard pill stuck in the throat.
I will never take Synthroid unless Armour and Westthroid is discontinued. Even if it wasnt consistent (which I have every indication it is and they said it was and there have been NO reports to the contrary), I would prefer it over the synthetic which made me horribly ill.
The backorder on Armour will be lifted by the end of the year. I have enough to get me through 3 more months, so all should be fine. I use the 1 grain size (which is not affected by manufacturing process change). I multi-dose so I take these smaller dosages so I dont have to cut pills.
And there is always Westthroid another good natural thyroid that is exactly like Armour only it does not have the sucrose and cannot be taken sublingually. My husband takes Westhroid.
***According to the Federal Register, no currently marketed orally administered levothyroxine sodium product has been shown to demonstrate consistent potency and stability and, thus, no currently marketed orally administered levothyroxine sodium product is generally recognized as safe and effective.
The government found that often levothyroxine sodium drugs do not remain potent through their expiration dates, and tablets of the same dosage strength from the same manufacturer have been found to vary in potency from lot to lot in terms of the amount of active ingredient present. This lack of stability and consistent potency has the potential to cause serious health consequences to those of us taking these drugs.
Levothyroxine sodium was first introduced into the market before 1962, without an approved "New Drug Application" (NDA), apparently in the belief that it was not a new drug.
Since that time, almost every manufacturer of orally administered levothyroxine sodium products, including Synthroid, has regularly reported recalls that were the result of potency or stability problems.
In some cases, problems result from the fact that levothyroxine sodium is unstable in the presence of light, temperature, air, and humidity. Just since 1991, there have been no less than 10 recalls of levothyroxine sodium tablets involving 150 lots and more than 100 million tablets. In all but one case, the recalls were initiated because tablets were found to be subpotent or because their levothyroxine tablets lose potency before their expiration dates. The remaining recall was initiated for a product that was found to be too potent. During this period, FDA also issued warnings to a manufacturer regarding a levothyroxine sodium product that lost potency when stored at the higher end of the recommended temperature range, and one whose potency ranged from 74.7 percent to 90.4, instead of the required 90 percent to 110 percent.
Problems also stem from formulation changes. Because these products are marketed without NDA's, manufacturers have not had to file for FDA approval each time they reformulate their levothyroxine sodium products. Manufacturers have changed inactive ingredients, physical form of coloring agents and other product aspects, resulting in significant changes in potency, in some cases increasing or decreasing potency by as much as 30 percent. As a result, in some cases, people on the same dosage for years became toxic on the same dose. There is evidence that manufacturers continue to make these sorts of formulation changes which affect potency.***
***Because Armour Thyroid medications require a 4.22 to 1 ratio of T4 to T3, batches of desiccated thyroid are mixed until the desired ratio is obtained. This method ensures that each strength of Armour Thyroid will be consistent every time.***