Excretion Just after oral dosing of radiolabeled methylphenidate in humans, about ninety% of the radioactivity was recovered in urine. The primary urinary metabolite was ritalinic acid, accounting for approximately eighty% with the dose.Thymomodulin? là m?t d?ng h?n h?p nhi?u peptit và chi?t xu?t t? tuy?n ?c con Bê. Thu?c s? có tác d?ng ?i?u b