Methenamine works well to prevent and treat recurrent urinary tract infections.
It can be less expensive and more effective than prophylaxis with other low-dose antibiotics.
It is generally well tolerated and causes few, if any, side effects.
Methenamine is rapidly absorbed from the digestive tract and is less likely to affect gut flora.
You cannot take methenamine to treat an active infection.
Methenamine and other antibiotics do not treat viral infections.
You need to take methenamine hippurate twice daily for several months.
The antibacterial activity of methenamine depends on urine acidity (pH 5.5 or lower). You therefore need to avoid certain foods and medicines that are urinary alkalinizers during treatment with methenamine.
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