What causes my pee to turn orange?

Orange urine. The orange appearance of the urine can be related to dehydration, vitamins, and various foods but blood in the urine should be ruled out. You should see your doctor for a urinalysis to rule out the presence of blood in the urine.
Variety. Certain medications can cause your urine to turn orange (laxatives, phenazopyridine), as can certain foods (b complex vitamins and carotene containing foods). However if these cannot explain the orange color and it persists for more than a day or two, consult a physician.