Brown or red urine may be caused by diet, drugs or an underlying medical condition, states Mayo Clinic. Blood tests and urinalysis can help determine the cause of urine discoloration.
Dehydration is the most common cause of dark urine, reports Healthline. Medical conditions including hepatitis, cirrhosis, and bladder or kidney stones can also cause brown urine. Blood in the urine could indicate a serious health problem and requires immediate medical attention.
Eating large amounts of rhubarb or fava beans can cause urine to turn brown, while carrots or complex B vitamins can cause dark yellow or orange urine, notes WebMD. Eating beets and blackberries can turn urine pink or red. Brown urine may also be a side-effect of certain medications, including chloroquine, primaquine and metronidazole.