乌洛托品 (Hyophen, Mandelamine, Phosphasal +7)

概览

Methenamine is a urinary tract antiseptic and antibacterial drug used for the prophylaxis and treatment of frequently recurring urinary tract infections requiring a long-term therapy.

作用机制

Methenamine does not have antibacterial properties in an alkaline environment (pH≥6); however, in a more acidic environment (pH<6), methenamine is hydrolyzed to formaldehyde. (1) Formaldehyde is considered to be highly bactericidal. (1) Formaldehyde has nonspecific antibacterial activity and works by denaturing proteins and nucleic acid of bacteria. (1) Certain bacteria such as Proteus sp. can alkalize urine, inhibiting the beneficial activity of formaldehyde. (1) The key role of the salt component of the drug, for example hippuric acid, is to maintain the acidic state of the urine. (1)

适应症

For prophylactic or suppressive treatment of frequently recurring urinary tract infections when long-term therapy is considered necessary. This drug is not used to treat infection and should only be used after appropriate eradication of infection with antimicrobial agents.

• Urinary Tract Infection