South Dakota Medication Aide Practice Test

Question: 1 / 400

What is the primary function of anti-thyroid drugs?

Increase the production of thyroid hormones

Block the formation of T3 and T4

The primary function of anti-thyroid drugs is to block the formation of T3 (triiodothyronine) and T4 (thyroxine) hormones. These drugs are used primarily in the treatment of hyperthyroidism, a condition where the thyroid gland is overactive and produces excessive amounts of these hormones. By inhibiting the synthesis of T3 and T4, anti-thyroid medications help to reduce the metabolic activity associated with hyperthyroidism, alleviating symptoms such as weight loss, rapid heartbeat, and anxiety.

In contrast, increasing the production of thyroid hormones, stimulating the thyroid gland, or providing supplemental thyroid hormones would directly contribute to higher levels of thyroid hormones, which is counterproductive in the context of treating hyperthyroidism. Therefore, blocking the formation of T3 and T4 stands as the appropriate mechanism of action for these medications.

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Stimulate the thyroid gland

Provide supplemental thyroid hormones

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