HIPREX (methenamine hippurate) is indicated for prophylactic or suppressive treatment of frequently recurring urinary tract infections when long-term therapy is considered necessary. This drug should only be used after eradication of the infection by other appropriate antimicrobial agents.
To reduce the development of drug-resistant bacteria and maintain the effectiveness of HIPREX (methenamine hippurate) and other antibacterial drugs, HIPREX (methenamine hippurate) should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy.
DOSAGE AND ADMINISTRATION
1 tablet (1.0 g) twice daily (morning and night) for adults and pediatric patients over 12 years of age. 1/2 to 1 tablet (0.5 to 1.0 g) twice daily (morning and night) for pediatric patients 6 to 12 years of age. Since the antibacterial activity of HIPREX (methenamine hippurate) is greater in acid urine, restriction of alkalinizing foods and medications is desirable. If necessary, as indicated by urinary pH and clinical response, supplemental acidification of the urine should be instituted. The efficacy of therapy should be monitored by repeated urine cultures.
1-gram scored, capsule-shaped yellow tablets debossed MERRELL 277 in bottles of 100 (NDC 0068-0277-61)
Store at 25°C (77°F); excursions permitted to 15-30°C (59-86°F) [see USP Controlled Room Temperature].
Rev. March 2006. Manufactured for: sanofi-aventis U.S. LLC, Bridgewater, NJ 08807. FDA revision date: 11/21/05
Last reviewed on RxList: 8/14/2008
This monograph has been modified to include the generic and brand name in many instances.
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