Which of the following medications is known to cause orange-colored urine?

Phenazopyridine is known to cause a distinctive orange-colored urine due to its chemical composition. It is a urinary analgesic that provides relief from pain, burning, and discomfort caused by urinary tract infections or procedures. The medication is excreted through the kidneys and can alter the color of urine, leading to a characteristic orange or red hue. This change is a harmless side effect, but it can sometimes concern patients who may not be aware of this effect.

In contrast, ibuprofen, metformin, and ciprofloxacin do not produce any noticeable color changes in urine. While other medications may affect urine color due to their specific metabolites, phenazopyridine is particularly recognized for this side effect, making it the correct choice in this scenario.