Euthyroid 100 Tablet contains Thyroxine 700 mcg, a synthetic form of the thyroid hormone used to treat hypothyroidism, a condition where the thyroid gland does not produce enough hormones. Thyroxine plays a crucial role in regulating metabolism, energy generation, and overall growth and development. Euthyroid 100 helps restore normal thyroid hormone levels, thereby alleviating symptoms such as fatigue, weight gain, cold intolerance, constipation, and depression associated with hypothyroidism. It is also prescribed for certain types of goiter and thyroid cancer as part of hormone replacement therapy. The medication should be taken orally, preferably on an empty stomach, to ensure optimal absorption. Dosage is individualized based on the patient's thyroid hormone levels, age, weight, and clinical response, and regular monitoring through blood tests is essential to avoid under- or over-treatment. Overdosage may lead to symptoms of hyperthyroidism, including palpitations, nervousness, and weight loss. Patients with cardiovascular disorders should use this medication cautiously under medical supervision. Euthyroid 100 is a vital therapy for maintaining normal metabolic function and improving quality of life in individuals with thyroid hormone deficiency.