CYP2D6 Inhibition by Selective Serotonin Reuptake Inhibitors: Analysis of Achievable Steady‐State Plasma Concentrations and the Effect of Ultrarapid Metabolism at CYP2D6

For paroxetine and fluoxetine, plasma concentrations and dosage strongly influence the magnitude of enzyme inhibition. The potential of paroxetine (a CYP2D6 substrate) as an inhibitor may be affected by the genotypes and metabolic capacities of individual subjects.