Intoxicación por ingesta de levotiroxina (Eutirox

Levothyroxine is the drug of choice of Hypothyroidism's treatment. The poisoning (intoxication) with levothyroxine is rare, but, overcoat it can be accompanied of secondary cardiovascular complications. Binding of thyroid hormones to plasma proteins is very high (99.97%), due to this, the levothyroxine is not removed by hemodialysis or hemoperfusion. It has an average life of 7 days. We hereby present the case o a 6-year-old girl who comes at the Emergency Service for suspicion of ingestion of levothyroxine in unknown quantities. There are valued what parameters of the follow-up of the tyroid function it is significant of the improvement of the patient.