What is methenamine?

Methenamine (Hiprex, Mandelamine, Urex) is an antibiotic used to treat chronic and recurrent urinary tract infections after other antibiotics have been tried first. It is sometimes taken for long periods of time. It can also be used to prevent infections in people with frequent urinary tract infections. The drug is used to kill E. coli, enterococci and staphylococci types of bacteria.

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