Increased apparent t1/2 of paracetamol. May reduce blood levels w/ OCs containing estrogens. Decreased anticoagulant effect of warfarin. Altered excretion of other drugs due to acidification of the urine. Interferes w/ the lab test results for paracetamol, AST, bilirubin, carbamazepine, creatinine, glucose, LDH, stool guaiac, theophylline, & uric acid. Increased risk of Al toxicity in antacids containing Al. May increase urinary excretion w/ aspirin. May interfere w/ the alcohol-disulfiram reaction. Decreased fluphenazine plasma level. May accelerate excretion of mexiletine.
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