Need To Use Either Praziquantel Or Mebendazole To Treat Tapeworms

Need to use either praziquantel or mebendazole to treat tapeworms in two patients; not sure mebendazole is indicated for tapeworms; think so; but the two clients that need treatment are on drugs that interact with praziquantel ie one on phenobarbital and the other on phenytoin. I understand that mebenadole also can potentially interact with phenytoin. What to do?