- Subjects may not receive any of the following medications two weeks prior to, during or two weeks after initiation of AR-67: aprepitant, atazanavir, bacillus of Calmette and Guerin vaccine, carbamazepine, citalopram, ketoconazole, intraconazole, measles virus vaccine, mumps virus vaccine, phenobarbital, phenytoin, poliovirus vaccine, rifabutin, rifampin, rotavirus vaccine, rubella virus vaccine, smallpox vaccine, St John's wort, typhoid vaccine, varicella virus vaccine or yellow fever vaccine.