Urex Side Effects, and Drug Interactions - Methenamine Hippurate

Urex Side Effects, and Drug Interactions - Methenamine Hippurate

SIDE EFFECTS

Adverse effects of UREX have been reported in fewer than 3.5% of patients treated.

These reactions have included the following, in decreasing order of frequency: nausea, vomiting, and rarely, pruritus, rash, dysuria.

Children have received UREX at the recommended dosages as a prophylactic/suppressive regimen after initial treatment of acute episodes of pyuria. Side effects were encountered in only 1.1% of these children.

DRUG INTERACTIONS

The concomitant administration of methenamine hippurate and sulfamethizole or sulfathiazole is liable to result in formation of a precipitate in the urine.