flavoxate flavoxate flavoxate is an anticholinergic with antimuscarinic effects. its muscle relaxant properties may be due to a direct action on the smooth muscle rather than by antagonizing muscarinic receptors. flavoxateclinical dataahfs/drugs.commonographmedlineplusa682706atc codeg04bd02 (who) identifiers iupac name 2-(1-piperidyl)ethyl 3-methyl-4-oxo-2-phenylchromene-8-carboxylate cas number15301-69-6 ypubchem cid3354iuphar/bps7187drugbankdb01148 ychemspider3237 yunii3e74y80meykeggd07961 ychebichebi:5088 ychemblchembl1493 ncomptox dashboard (epa)dtxsid3023053 echa infocard100.035.745 chemical and physical dataformulac24h25no4molar mass391.467 g·mol−13d model (jsmol)interactive image smiles o=c(occn1ccccc1)c4cccc2c4o/c(=c(\c2=o)c)c3ccccc3 inchi inchi=1s/c24h25no4/c1-17-21(26)19-11-8-12-20(23(19)29-22(17)18-9-4-2-5-10-18)24(27)28-16-15-25-13-6-3-7-14-25/h2,4-5,8-12h,3,6-7,13-16h2,1h3 ykey:spiutqoukamgcx-uhfffaoysa-n y ny (what is this?) (verify) clinical uses flavoxate is used to treat urinary bladder spasms. it is available under the trade name urispas (paladin)(india), genurin (by recordati, italy) in italy and ksa, uritac by el saad company in syria, under the name bladderon by nippon shinyaku of japan, or bladuril in chile, utispas ( apex pharma) in nepal. flavoxate is indicated for symptomatic relief of interstitial cystitis, dysuria, urgency, nocturia, suprapubic pain, frequency and incontinence as may occur in cystitis, prostatitis, urethritis, urethrocystitis/urethrotrigonitis. side effects flavoxate is generally well tolerated, but can potentially cause vomiting, upset stomach, dry mouth or throat, blurred vision, eye pain, and increased sensitivity of the eyes to light. contraindications flavoxate is contraindicated in patients who have any of the following obstructive conditions: pyloric or duodenal obstruction, obstructive intestinal lesions or ileus, achalasia, gastrointestinal hemorrhage and obstructive uropathies of the lower urinary tract.