My urologist is prescribing a lower dosage but my nephrologist is not in favor of me taking this medicine.
Methenamine is used for preventing urinary tract infections.
Methenamine is a urinary antiseptic. It works by concentrating in the urine as formaldehyde, which kills bacteria in the urine.
It should be avoided in people with kidney disease i.e. renal insufficiency, where the kidneys don't work well. Perhaps your nephrologist thinks that your kidneys aren't working as well as it should.
- Methenamine Information for Consumers
- Methenamine Information for Healthcare Professionals (includes dosage details)
- Side Effects of Methenamine (detailed)
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