A complete of three % of active substance is excreted in urine as unchanged active compound. Tapentadol is Also metabolised to N-desmethyl tapentadol (13 %) by CYP2C9 and CYP2C19 also to hydroxy tapentadol (two %) by CYP2D6, which are even further metabolised by conjugation. Consequently, active material metabolism mediated by cytochrome P450 proce… Read More