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PHENYTOIN DOSES ARE TO BE INCREASED
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NITROFURANTOIN ACTIVITY IS REDUCED IN THE PRESENCE OF CARBONIC ANHYDRASE INHIBITORS & OTHER DRUGS THAT ALKALINISE URINE
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ANTACIDS CAN DELAY & DECREASE ABSORPTION
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PROBENECID INCREASES THE SERUM LEVELS OF THE DRUG
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INCREASED CHANCES OF PERIPHERAL NEUROPATHY
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NITROFURANTOIN MAY ANTAGONIZE THE ANTIBACTERIAL EFFECT OF NORFLOXACIN IN THE URINARY TRACT ; CONCURRENT USE IS NOT RECOMMENDED
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