Dette er konstateret ved hydantoiner, barbiturater, primidon, carbamazepin og rifampicin; bosentan, oxcarbazepin, topiramat, felbamat, ritonavir, griseofulvin, modafinil og fenylbutazon er ligeledes under mistanke.
This has been established with hydantoins, barbiturates, primidone, carbamazepine and rifampicin; bosentan, oxcarbazepine, topiramate, felbamate, ritonavir, griseofulvin, modafinil and phenyl butazone are also suspected.