Nitrofurantoin may turn your urine brown or dark yellow in colour. However, you need not worry as this is usually temporary ...

Side effects of nitrofurantoin include an upset stomach, although this can be prevented by taking it with or straight after food. It can also turn your pee dark yellow or brown, with colour ...

Side effects were reported by 27% of women in ... a 3-day course of a fluoroquinolone or a 7-day course of nitrofurantoin is appropriate.