You Can Pee a Rainbow | Urine & Health | Live Science - Why is my piss blue
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Is Blue Urine Normal? Urine Colors Explained. Medically reviewed by Gerhard Whitworth, RN on October 25, — Written by Kathryn Watson. Colors; Color. these hues are probably due to dyes in your food or meds you've taken, like the anesthetic propofol or the allergy/asthma medicine promethazine. a few rare.