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Methenamine MandelatePronounced"meth-EN-uh-meen" Common brand names:Mandelamine UsesMethenamine is used to prevent or control returning urinary tract infections caused by certain bacteria. It is not used to treat an active infection. Antibiotics must be used first to treat and cure the infection. Methenamine is a drug 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. This drug is effective only against bacterial infections in the urinary tract. It will not work for other types of bacterial infections (such as in the blood) or for viral infections (such as the common cold or flu). Unnecessary use or misuse of any antibacterial drug can lead to its decreased effectiveness. How to Use This MedicationTake this medication by mouth as directed by your doctor. The dosage is based on the brand of methenamine you are prescribed, your medical condition, and your response to treatment. Children's dosage is also based on age and weight. Methenamine works better if your urine is more acidic. Your doctor may test the acidity of your urine (urine pH). If necessary, your doctor may recommend ways to increase urine acidity (such as by taking vitamin C/drinking cranberry juice, limiting foods that decrease acidity/increase alkalinity such as milk products/most fruits, adjusting alkalinizing medications). See also Drug Interactions section. Follow your doctor's instructions. For the best effect, take this drug at evenly spaced times. To help you remember, take this medication at the same time(s) every day. Tell your doctor if symptoms of a urinary tract infection return (such as burning/painful/frequent urination). |