Cluster 1050: cypa strong inhibitors rifampin phenytoin ketoconazole carbamazepine inducers itraconazole cytochrome 
Cluster 1167: wort st johns john herbal hypericum perforatum remedy rifampin use 
Cluster 2023: phenobarbital carbamazepine phenytoin wort rifabutin inducers st cypa rifampin johns