In fact, there are other drugs available in the market besides euthyroxine: domestic levothyroxine tablets and Raitis can be substituted. Because the dosage form is different, when taking it must be converted according to the dose, never according to the tablet. The drug may be available after New Year’s Day at the Second and Third Hospital of the University of Jilin. If you only have thyroid tablets, then make a conversion: a 40mg thyroid tablet is equivalent to 50 micrograms of levothyroxine tablets such as euthyroxine, so be sure to calculate the right amount. If the original oral eugenol 50 micrograms / day, stop using three days, then long application eugenol original amount double three days that is 100 micrograms 3 days, the fourth day to resume the original amount that is 50 micrograms / day. In case of senior heart patients, oral administration is carried out from half the amount i.e. 25 micrograms/day. Gradual supplementation is for reference only!