Drug Interaction Report

ADJUST DOSING INTERVAL: Bulk-forming laxatives such as guar gum, psyllium, polycarbophil, or methylcellulose may affect the bioavailability of concomitantly administered substances due to their effect on the rate of gastrointestinal transit and gastric emptying.

MANAGEMENT: In general, oral medications should be administered at least 2 hours before or 2 hours after dosing of the bulk-forming laxative.

ADJUST DOSING INTERVAL: Food enhances the oral bioavailability of ganaxolone. When administered with a high-fat meal, ganaxolone peak plasma concentration (Cmax) and systemic exposure (AUC) increased by 3- and 2-fold, respectively, compared to administration under fasted conditions. Ganaxolone was administered with food in the premarketing study population. The efficacy of ganaxolone when administered in the fasted state is unknown.

GENERALLY AVOID: Concomitant use of ganaxolone with central nervous system (CNS) depressants, including alcohol, may potentiate adverse effects such as somnolence and sedation.

MANAGEMENT: Ganaxolone must be administered with food according to the manufacturer. Patients should be advised to avoid or limit consumption of alcohol and to avoid activities requiring mental alertness such as driving or operating hazardous machinery until they know how the medication affects them.