Participants supplied all medications prescribed by a doctor, vitamins, supplements, and over-the-counter remedies and medicines taken in the 2 weeks prior to the evaluation. Direct visual inspection of all containers of prescription and over-the-counter agents allowed for medication documentation. Medications were subsequently coded using the Medi-Span Drug Data Base system (Medi-Span. Master Drug Data Base Documentation Manual. Indianapolis, IN: Medi-Span, 1995).

Medications include:

ANTIVERT, ARTANE, BELLA ALK/PB, BELLA/OPIUM, BELLADONNA, BENTYL, BENZTROPINE, BETHANECHOL, BONINE, CHLORD/CLIDI, CHLORDIAZ, COGENTIN, DETROL, DETROL LA, DICYCLOMINE, DIMENHYDRIN, DITROPAN, DITROPAN XL, DONNATAL, DRAMAMINE, EMETROL, ENABLEX, FLAVOXATE, GELNIQUE, GLYCOPYRROL, HYOMAX-DT, HYOMAX-SL, HYOMAX-SR, HYOSCYAMINE, HYOSOPHEN, HYOSPAZ, LEVBID, LEVSIN, LEVSIN/SL, LEVSINEX, LIBRAX, MECLIZINE, METHSCOPOLAM, MOTION SICK, MYRBETRIQ, NAUSEA CONTR, NAUZENE, OXYBUTYNIN, OXYTROL, PAMINE FORTE, PRO-BANTHINE, PROPANTHELIN, PYRIDIUM, ROBINUL, SAL-TROPINE, SANCTURA, SANCTURA XR, SYMAX DUOTAB, SYMAX FASTAB, TIGAN, TOLTERODINE, TOVIAZ, TRANSDERM SC, TRANSDERM-SC, TRIHEXYPHEN, TRIMETHOBENZ, TROSPIUM CHL, TROSPIUM CL, URECHOLINE, URISPAS, VESICARE