Zolid Ketoconazole; OC containing ethinyl estradiol & norethindrone.
ZolidPlus Pioglitazone: CYP2C8 inducers (eg, rifampin) & inhibitors (eg, gemfibrozil), OCs. Metformin HCl: Cationic drugs (eg, amiloride, digoxin, morphine, procainamide, quinidine, quinine, ranitidine, triamterene, trimethoprim, vancomycin); furosemide, nifedipine, thiazides & other diuretics, corticosteroids, phenothiazines, thyroid products, estrogens, phenytoin, nicotinic acid, sympathomimetics, Ca channel blockers & INH.