Which of the following treatments is often used as a first-line approach to hyperthyroidism?

Methimazole is a first-line treatment for hyperthyroidism, particularly in cases of Graves' disease, which is the most common cause of this condition. It is an antithyroid medication that works by inhibiting the synthesis of thyroid hormones, leading to a decrease in the levels of hormones such as thyroxine (T4) and triiodothyronine (T3) in the bloodstream. This mechanism helps manage the symptoms associated with hyperthyroidism, including weight loss, anxiety, and increased heart rate.

In many cases, methimazole is preferred over other treatments as an initial approach due to its effectiveness in quickly improving symptoms and normalizing thyroid function. Patients may be monitored for thyroid levels and side effects during treatment, allowing for adjustments in dosage as needed to achieve the desired hormonal balance.

Other treatment options exist, such as radioactive iodine, which is often used for long-term management or definitive treatment of hyperthyroidism, particularly in older adults or patients with significant goiter. However, radioactive iodine is not typically considered a first-line treatment for initial symptom control. Beta-blockers may be used to help manage symptoms like palpitations and tremor but do not address the underlying hyperthyroidism. Levothyroxine, on