Variants in this gene can lead to significant differences in how individuals process the drug. For instance, a study found that certain CYP2B6 variants were associated with slower metabolism of ...

May antagonize other drugs metabolized by CYP3A4 or CYP2B6. Do not give lopinavir/ritonavir tabs or oral soln once daily with nevirapine (see full labeling). Monitor warfarin, carbamazepine ...