Euthyrox, or levothyroxine sodium tablets, are not usually foamy in the urine when you take levothyroxine sodium tablets. Levothyroxine sodium tablets is a kind of drug for the treatment of hypothyroidism, which is mainly a drug to replace a series of clinical manifestations produced by insufficient thyroid hormone. Normal human thyroid gland secretes thyroid hormone, when the body lacks thyroid hormone, hypothyroidism related manifestations, need to supplement levothyroxine sodium tablets, the thyroid hormone will be adjusted to the normal level, belongs to the alternative treatment, if the dosage of the drug is appropriate, generally will not produce significant harm to the body and adverse reactions. Eating levothyroxine sodium tablets, the most common adverse reaction is due to overdose caused by hyperthyroidism manifestations, such as palpitations, excessive sweating, etc., this time according to the thyroid function of levothyroxine sodium tablets dosage is adjusted, that can be restored, generally will not appear other adverse reactions. If you find foam in the urine, you should go to the hospital in time, under the guidance of the doctor to clarify the cause of the disease and timely treatment.