When taking this metronidazole my urine is dark Brown why?

Some people may experience instances of Dark urine while taking Metronidazole. The pigment responsible is most likely to be a metabolite of Metronidazole. It has no clinical significance. So need not worry. Moreover you may be having bouts of nausea and vomiting. It is common. But definitely pay a visit to your physician if the dark color of urine persists even after stopping medication and if you experience any instances of decreased vision, burning or numbness or tingling or painful sensations in the hands or feet, changes in speech patterns and yellow eyes or skin. Alcoholic beverages should be avoided while taking Metronidazole and for at least one day afterwards the completion of medication.