Thyroid Medication - Armour: Uses, Adverse Effects, and Additional Information
Armour Thyroid, a medication used to treat hypothyroidism, is a desiccated thyroid extract (DTE) derived from the thyroid gland of pigs. Unlike synthetic thyroid hormone replacements, Armour Thyroid contains both T3 (liothyronine) and T4 (levothyroxine) hormones, mimicking the natural thyroid secretion more closely.
Pros of Armour Thyroid
Armour Thyroid offers several advantages over T4-only drugs like Synthroid. It may provide better symptom relief and higher patient satisfaction due to the presence of T3 and other thyroid hormone precursors. Additionally, Armour Thyroid is often linked to more weight loss compared to T4-only medications, making it potentially beneficial for patients struggling with weight management.
However, there are also some drawbacks to consider.
Cons of Armour Thyroid
Because Armour Thyroid contains T3, it can cause more pronounced changes in thyroid lab tests, leading to complications in lab interpretation. Some patients may experience symptoms of hyperthyroidism, such as rapid heart rate and palpitations, if the dose is too high or they are sensitive to T3.
In patients with autoimmune thyroid disease, Armour Thyroid may exacerbate autoimmune symptoms or cause flare-ups. The dosing can also be less predictable and consistent, leading to variability in hormone levels and side effects.
Safety concerns have also been raised due to Armour Thyroid being derived from animal sources, with the FDA taking regulatory action against some animal-derived thyroid products due to concerns about safety and consistency.
Precautions and Considerations
Armour Thyroid must be taken on an empty stomach and avoiding calcium, iron, or antacids close to dose time to ensure proper absorption.
It is important to ensure consistent dosages of Armour Thyroid to avoid negative side effects. A 2021 study found that people who had side effects with levothyroxine saw improvement after switching to Armour Thyroid. However, treating hypothyroidism with Armour Thyroid is not recommended as a supplement to promote weight loss due to potential serious health consequences.
Armour Thyroid may not be a safe or effective medication for individuals with certain health conditions, such as people with a history of cardiovascular diseases, diabetes, or certain types of thyroid cancer.
In conclusion, while Armour Thyroid may offer advantages for some patients due to its combined T3 and T4 content and potential symptom benefits, it carries risks of more lab complexity, potential hyperthyroid symptoms, variability, and regulatory concerns that require careful monitoring by a healthcare provider. It is crucial to discuss the potential benefits and risks with a healthcare provider before starting Armour Thyroid or any other medication for hypothyroidism.
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