Euthyrox 2 tablets per day does not usually affect heart function if taken as prescribed and at the right dose, but if 2 tablets per day is more than prescribed and the dose is too high, it may be bad for the heart. Eugenol, or levothyroxine sodium tablets, is a synthetic thyroxine that, like endogenous thyroid hormones, can be converted to triiodothyronine (T3) in peripheral organs, and then binds to the T3 receptor to perform specific physiological functions. It can be used for the treatment of non-toxic goiter, hypothyroidism, goiter or post-surgical thyroid cancer. Before taking Levothyroxine Sodium Tablets, make sure to carry out the four tests of thyroid function to clarify the condition, and determine the therapeutic dosage under the guidance of the doctor. If the therapeutic dose is appropriate, taking Levothyroxine Sodium Tablets will not significantly affect the heart function. If you take too much levothyroxine sodium tablets, the body is in a state of hypermetabolism, which will increase myocardial oxygen consumption and increase the metabolic burden on the heart, which may affect the heart function over time. Tachycardia, palpitations, angina pectoris and even arrhythmia may occur, which is detrimental to health. So be sure to follow the doctor’s instructions for medication, regular review, the doctor will be based on the results of the examination regularly adjust the dose of medication.