The generic name of Eugenol is Levothyroxine Sodium Tablet, if you are taking Levothyroxine Sodium Tablet all the time, you should continue to take it before the laboratory test of thyroid function, and it is not recommended to stop the drug by yourself. Levothyroxine sodium tablets, generally used for the treatment of hypothyroidism, most need long-term treatment, so it is recommended to continue to take a specific dose before the examination, should not blindly stop taking the drug, and timely inform the doctor about taking the drug at the time of the examination and follow the doctor’s instructions for examination. Side effects such as palpitations (rapid heartbeat, often accompanied by panic), headache, vomiting, and diarrhea may occur with Levothyroxine Sodium Tablet. It should be noted that this drug is contraindicated in patients with untreated adrenocortical and pituitary insufficiency, acute myocarditis, and in people who are allergic to the ingredients of the drug. The use and discontinuation of Levothyroxine Sodium Tablets are subject to medical advice.