About 50% is excreted by glomerular filtration and about 50% through renal tubular secretion within 24 hours, with the majority being eliminated within 6 hours; high concentrations are achieved in the urine.
Alrededor del 50% se excreta por filtración glomerular y cerca del 50% por secreción tubular renal en 24 horas y la mayor parte se elimina en 6 horas; en orina se alcanzan concentraciones altas.