Allopurinol (high dose), calcium channel blockers, cimetidine erythromycin, interferon, mexiletine, orai confra-ceptivas, propranolol, quinolones, troleandanycin: Increased serum levels of theophylline. Monitor theophylline levels.
Barbiturates, charcoal, ketoconazole, phenytoin; rifampin: Decreased serum theophylline levels. Monitor child and theophylline levels.
Beta blockers: Antagonistic pharmacologic ef-fect. Monitor child for effect.
Carbamazepine, isoniazid, loop diuretics: In-creased or decreased theophylline levels. Moni-tor theophylline levels.
Lithium: Increased excretion of lithium. Monitor lithium levels.
Drug-food: Accelerated absorption. |