drug that can change urine color

September 1999

It's important to tell patients if they're taking a drug that can change urine color...to avoid unnecessary alarm.

Some drugs frequently cause color changes...others only show up in acidic or alkaline urine.

Brown, black, or dark urine can be seen with cascara...furazolidone...levodopa...methyldopa...metronidazole...nitrofurantoin...or senna.

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