The generic name of Eugenol is Levothyroxine Sodium Tablets. Post-thyroid surgery patients taking levothyroxine sodium tablets after the TSH value did not fall T4 value increased is usually considered may be caused by the drug dose is insufficient, it is recommended to consult a doctor in a timely manner. TSH is also known as thyroid stimulating hormone, T4 generally refers to thyroxine. Thyroid surgery, due to the removal of part of the thyroid gland may occur after the operation of hypothyroidism, will lead to thyroid stimulating hormone increased and thyroxine decreased, this time usually need to take levothyroxine sodium tablets for replacement therapy. In the course of treatment with levothyroxine sodium tablets, T4 will gradually rise and thyrotropin will gradually fall, if the TSH value does not fall and T4 value rises, it may indicate that the dose of the drug is insufficient to achieve the therapeutic effect. Post-operative thyroid patients with no decrease in TSH and an increase in T4 should actively cooperate with their doctors.