How Long Does Azo Dye Last?

AZO Urinary Pain Relief reaches the bladder within one hour as indicated by a change in urine color and may stay in your system for up to 24 hours.

What happens if you take AZO for more than 2 days?

Phenazopyridine can also permanently stain soft contact lenses, and you should not wear them while taking this medicine. Do not use phenazopyridine for longer than 2 days unless your doctor has told you to. This medication can cause unusual results with urine tests.

Why is my urine orange color after taking AZO?

There's just one catch—one of the key ingredients in AZO Urinary Pain Relief^®, responsible for relieving your UTI symptoms so quickly, is also known to dye urine and fabrics orange. This key ingredient is called Phenazopyridine hydrochloride.