<p>Concomitant administration of Sucralfate may reduce the bioavailability of certain drugs including Fluoroquinolones such as Ciprofloxacin and Norfloxacin, Tetracycline, Ketoconazole, Sulpiride, Digoxin, Warfarin, Phenytoin, Theophylline, Levothyroxine, Quinidine, and H2 antagonists. The bioavailability of these agents may be restored by separating the administration of these agents from Sucralfate by two hours. This interaction appears to be non-systemic in origin presumably resulting from these agents being bound by Sucralfate in the gastrointestinal tract. Because of the potential of Sucralfate to alter the absorption of some drugs from the gastrointestinal tract, the separate administration of Sucralfate from that of other agents should be considered when alterations in bioavailability are felt to be critical for concomitantly administered drugs. Sucralfate should not be co-administered with citrate preparations. Co-administration citrate preparations with sucralfate may increase the blood concentrations of aluminium. The mechanism may be due to the chelation of aluminium which is assumed to increase its absorption. The administration of Sucralfate&nbsp;&nbsp; 1 g and enteral feeds by nasogastric tube should be separated by one hour in patients receiving Sucralfate 1 g for the prophylaxis of stress ulceration. In rare cases, bezoar formation has been reported when Sucralfate and enteral feeds have been given too closely together.</p>