Synonym for methenamine ... <chemical> An antibacterial agent most commonly used in the treatment of urinary tract infections. Its antibacterial action derives from the slow release of formaldehyde by hydrolysis at acidic pH. ... Pharmacological action: anti-infective agents, urinary. ... Chemical name: 1,3,5,7-Tetraazatricyclo(3.3.1.13,7)dec... Found on http://www.encyclo.co.uk/local/20973