What medications are used to treat hyperthyroidism?

Hyperthyroidism, also known as thyrotoxicosis, is a common endocrine disorder caused by excessive secretion of thyroid hormones. Its main manifestations include emotional lability, irritability, heat intolerance, weight loss, and increased appetite. It is frequently accompanied by varying degrees of exophthalmos (protruding eyes). So, what medications are used to treat hyperthyroidism? The following section addresses this question.

Medications for Hyperthyroidism

Generally, antithyroid drugs (ATDs) are the first-line pharmacological treatment for hyperthyroidism and fall into two main classes: thionamides (e.g., propylthiouracil and methimazole) and imidazoles (e.g., methimazole and carbimazole). Beta-blockers—most commonly propranolol—are often used as adjunctive therapy during the initial phase of ATD treatment to rapidly alleviate clinical symptoms of hyperthyroidism. For thyroid storm, intravenous hydrocortisone (a glucocorticoid) may be administered. However, it is crucial to emphasize that all these medications must be taken strictly under medical supervision to avoid exacerbating the condition. Additionally, patients with hyperthyroidism are advised to follow a high-protein diet, maintain adequate hydration, supplement vitamins appropriately, restrict iodine intake, avoid spicy foods, and limit consumption of coffee and strong tea. Emotional regulation is also essential.

Knowledge Expansion: Symptoms of Hyperthyroidism

1. Exophthalmos (Protruding Eyes)

Exophthalmos may impair eyelid closure, leading to corneal dryness and, in severe cases, corneal ulceration or perforation. Imaging studies may reveal mild ophthalmoplegia (eye muscle weakness). Moreover, some patients may experience neuropsychiatric symptoms such as nervousness, anxiety, insomnia, and suspiciousness.

2. Goiter (Thyroid Enlargement)

Both Hashimoto’s thyroiditis and silent thyroiditis can produce similar clinical presentations. The enlarged thyroid gland is typically firm in consistency and has well-defined borders. Some patients may experience compressive symptoms (e.g., dysphagia or dyspnea), although thyroid function usually remains unaffected.

3. Weight Loss

Abnormal elevation of metabolic activity leads to increased circulating thyroid hormone levels, resulting in heightened hunger and increased appetite. However, hyperthyroidism impairs nutrient absorption; thus, despite markedly increased food intake, patients often experience significant weight loss and, in some cases, malnutrition.

The above outlines the pharmacological management of hyperthyroidism. We hope this information is helpful to you.