Thyzol 10 mg is an antithyroid medication manufactured by Nuvista Pharma Ltd., containing methimazole as its active ingredient. Methimazole works by inhibiting the synthesis of thyroid hormones, thereby reducing excessive hormone levels in conditions such as hyperthyroidism, Graves' disease, and toxic multinodular goiter. It is also used to prepare patients for thyroidectomy or radioactive iodine therapy. This medication is typically administered orally, with the initial daily dosage varying based on the severity of the condition, and maintenance doses adjusted accordingly. Common side effects may include skin rash, nausea, headache, and mild gastric discomfort. Serious adverse effects like agranulocytosis and liver toxicity are rare but require immediate medical attention. Thyzol should be used with caution during pregnancy, especially in the first trimester, due to potential risks to the fetus. Regular monitoring of thyroid function and blood counts is recommended during treatment.