Brand Name Chemical Name Ibuprofen ibuprofen Imdur isosorbide mononitrate Imitrex sumatriptan Imodium loperamide hydrochloride Imuran azathioprine Inderal LA propranolol Indocin indomethacin Intal Inhaler cromolyn sodium Invirase saquinavir Isoptin SR verapamil Isordil Titradose isosorbide dinitrate