. . . . "Be sure to mention any of the following: carbamazepine (Carbatrol, Epitol, Tegretol); medications that contain estrogen such as hormone replacement therapy and hormonal contraceptives (birth control pills, patches, rings, and injections); phenobarbital; phenytoin (Dilantin); and rifampin (Rifadin, in Rifater, in Rifamate)." .