Probenecid, antidiabetic agents. Tab: Tizanidine; oral anticoagulants (eg, warfarin) & glibenclamide, methotrexate; metal ions (eg, Al, Ca, Mg or Fe) & cations; histamine H
2-antagonist, phenytoin, antiarrhythmic (eg, quinidine, procainamide, amiodarone or sotalol). Antihistamines, astemizole, terfenadine, cisapride, erythromycin, pentamidine, phenothiazines or TCAs. Antacids, sucralfate, Zn-containing multivit prep. Infusion: Theophylline, NSAIDs, cimetidine.