Some causes of orange-colored urine include medical conditions affecting the bile duct or liver and dehydration, according to Mayo Clinic. Normal urine is pale yellow to deep amber in color.
In some instances, medical conditions, including problems with the liver or bile ducts, result in orange urine, notes Mayo Clinic. This is particularly true if light-colored stools accompany the orange urine. Dehydration is another cause of orange urine. When the body becomes dehydrated, the wastes in the urine become concentrated, which makes the urine take on a deeper or often orange color.
Consuming carrots is a common cause of urine turning an unnatural orange-tinted color, notes WebMD. Urine can turn several different colors based on consumption of different foods, medications and vitamins. For example, some medications turn urine a fluorescent blue or green color, while some vitamins turn it an unnaturally yellow color. Porphyria, an inherited disease, can turn urine the color of port wine.
Urine can also turn a cola-colored hue or a brown color from eating copious amounts of aloe, rhubarb or fava beans, advises Mayo Clinic. Certain medications, such as the antibiotic Flagyl, laxatives that contain senna, and the muscle relaxant methocarbamol, can also turn urine brown. Some kidney and liver disorders and muscle injury caused by extreme exercise may also cause brown urine.