Methenamine Mandelate 500 mg.
Methenamine Mandelate is used to prevent or control returning urinary tract infections, cystitis or pyelonephritis caused by certain bacteria. It is not used to treat an active infection, other antibiotics must be used first to treat and cure the infection. Methenamine is an antibiotic that stops the growth of bacteria in urine. This medication also contains an ingredient that helps to make the urine acidic. When the urine is acidic, methenamine turns into formaldehyde to kill the bacteria.