Urinary antiseptics
- Antimicrobial effect mainly within urine
- Methenamine generates formaldehyde in acidic urine
- Used for UTI prevention—not pyelonephritis treatment
- Requires adequate renal delivery
- Urinary pH strongly affects methenamine activity
- Minimal systemic antibacterial pressure is attractive
Class at a glance
- Antimicrobial effect mainly within urine
Clinical role
- Methenamine generates formaldehyde in acidic urine
- Used for UTI prevention—not pyelonephritis treatment
Members / distinctions
- Urinary pH strongly affects methenamine activity
- Minimal systemic antibacterial pressure is attractive
Practical pearls
- Requires adequate renal delivery
Self-check
- What are Urinary antiseptics used for?
UTI prevention—not pyelonephritis treatment.
Drugs in this class (4)
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