Representative Dixon plots obtained from an inhibition kinetic study of CYP1A2-mediated phenacetin O-deethylation (A); CYP2C19-mediated S-mephenytoin 4-hydroxylation (B), and CYP2E1-mediated chlorzoxazone 6-hydroxylation (C) in the presence of different concentrations of cis-resveratrol in pooled human liver microsomes (n = 3). Each cis-resveratrol (0, 0.5, 2.0, 5.0, 20, and 50 μM) was pre-incubated with HLMs in the presence of an NADPH-generating system (30 min, 37 °C), and then an increasing concentration of phenacetin (5 (⬤), 20 (◯), and 50 μM (▼)), S-mephenytoin (20 (⬤), 40 (◯), and 100 μM (▼)), and chlorzoxazone (1 (⬤), 5 (◯), and 20 μM (▼)) added before further incubation for 10 min.