Methenamine hippurate adverse reactions
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Abdurahman Khalil, M.D. [2]
ADVERSE REACTIONS
Minor adverse reactions have been reported in less than 3.5% of patients treated. These reactions have included nausea, upset stomach, dysuria, and rash.
References
http://www.accessdata.fda.gov/drugsatfda_docs/label/2005/17681s014lbl.pdf