From the FDA Drug Label
Patients should be informed that Phenazopyridine HCl produces a reddish-orange discoloration of the urine and may stain fabric The pill for bladder issues, Phenazopyridine (Pyridium), changes the urine color to reddish-orange, not blue or green 1.
From the Research
Yes, there are medications for bladder issues that can change urine color to blue or green. Medications that can turn urine blue or green include methylene blue (used for some urinary tract infections at doses of 100-200mg orally) 2, 3, certain multivitamins containing B complex vitamins, propofol (an anesthetic) 2, and some antibiotics. These color changes occur because the medications or their metabolites are excreted through the kidneys and have pigments that become visible in urine. The color change is harmless and temporary, lasting only while the medication is in your system. If you experience unexpected urine color changes while taking medication, it's worth discussing with your healthcare provider, though in most cases it's simply a benign side effect and not a cause for concern. Some key points to consider:
- Methylene blue can cause green urine due to its excretion through the kidneys 2, 3.
- Propofol can also cause green urine, although this is a rare occurrence (less than 1% of cases) 2.
- Other medications, such as metronidazole, can cause urine discoloration, but this is typically a darkening of the urine rather than a change to blue or green 4. It's essential to note that while these color changes can be alarming, they are usually harmless and resolve on their own once the medication is stopped. However, if you experience any other symptoms or concerns, it's always best to consult with your healthcare provider to rule out any underlying conditions. In terms of specific medications, methylene blue is a common culprit for turning urine blue or green 2, 3, and propofol can also cause this effect, although it's less common 2. Ultimately, if you're experiencing unusual urine color changes, it's crucial to discuss them with your healthcare provider to determine the cause and ensure your safety.