Answer: It is a very difficult question to answer in view of the fact that there is no real brand when it comes to levothyroxine medications. These days, a thyroid medication name that has been on the market for years, such as Synthroid and Levoxyl, are viewed as brand names. These brands have well established quality control and consistency. Generic preparations, such as levothyroxine, may or may not provide excellent stability in thyroid levels as other established names on the market. All thyroid preparations contain certain inactive ingredients that may have irritating effects on the immune system that can cause the immune system to produce inflammation chemicals that can contribute to symptoms. This applies to both generic and well-established names.
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