A common medication taken by more than 100 million worldwide for urinary tract infections has been linked to cancer.
Phenazopyridine — sold under various brand names including Azo, Pyridium, Prodium, Pyridiate, Baridium, and Uricalm — is available over the counter (OTC) in the US and UK at lower strengths and by prescription at higher strengths.
It works by numbing the lining of the urinary tract, which helps to lessen the symptoms of urinary tract infections (UTIs), which include burning, irritation, and discomfort, as well as frequent and urgent urination.
But now experts are warning the drug could cause cancer based on early evidence from animal studies. Continue reading