The generic name for Uroxal is levothyroxine sodium, and its adverse reactions are generally associated with overdose of the drug and are consistent with the symptoms of hyperthyroidism. Adverse reactions may include tachycardia, palpitations, arrhythmias, elevated blood pressure, angina pectoris, headache, and anxiety, excitement, insomnia, tremor, muscle weakness, as well as paresthesia, fear of heat, sweating, flushing, fever, weight loss, irregular menstruation, diarrhea, and vomiting. These adverse reactions usually disappear after the drug is reduced or the treatment is temporarily stopped. Thyroid crisis has also been reported to occur after high doses or chronic poisoning, and spasms, arrhythmias, heart failure, coma and death have also occurred. Therefore, when using this drug, you must regularly monitor the function of the thyroid gland, and adjust the dose of Eugenol according to what we measure, which is often called the five items of thyroid function.