* Dihydropyridines including Plendil, Cardene, nifedipine, Sular, Bayotensin
* Cozaar
* The cough suppressant dextromethorphan
* modafinil (Provigil, Alertec, Modavigil, Modalert, Modiodal, Modafinilo, Carim, Vigia)
* Prandin
* Calan SR, Covera HS, Isoptin SR, Verelan
* Buspar
* Eltroxin, Levoxyl, Synthroid
* Antiarrhythmics including Cordarone, Multaq, quinidine (Quinidex, Cardioquin, Quinora), Norpace, Rhythmol, and Coreg
* Antihistamines Hismanal and S