translate English to French: The pharmacological mechanism of action for most NHPs is generally unknown and it is likely that there are several active constituents in each product that can interact with other constituents to either increase their pharmacokinetic (PK) or pharmacodynamic (PD) activity.
Le mécanisme d'action pharmacologique de la plupart des PSN est inconnu; chacun d'eux contient probablement plusieurs substances actives qui peuvent interagir avec d'autres substances et en accroître l'activité pharmacocinétique (PC) ou pharmacodynamique (PD).