Other reactions noted less frequently include transient abnormalities of hepatic or renal function, CNS effects including headache, drowsiness, nervousness and visual disturbances, skin rashes and urticaria. Allergic glomerulonephritis known to be associated with prostaglandin inhibitors, and reversible non-oliguric renal failure has been reported. Mefenamic Acid may give a false positive in tests for the presence of bile in the urine. Hematological effects noted with long term treatment include hemolytic anemia, agranulocytosis, pancytopenia, thrombocytopenia or thrombocytopenic purpura, and bone marrow aplasia.
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