Ritonavir or lopinavir/ritonavir greatly enhance plasma concentrations of oxycodone in healthy human volunteers as a result of inhibition of CYP3A4 and CYP2D6.[58] Rifampicin tremendously minimizes plasma concentrations of oxycodone on account of powerful induction of CYP3A4.Lots of unsafe online pharmacies use pretend “storefronts” to mimic ac… Read More