Urispas Description

URISPAS® (flavoxate HCl) tablets contain flavoxate hydrochloride, a synthetic urinary tract spasmolytic.

Chemically, flavoxate hydrochloride is 2-piperidinoethyl 3-methyl-4-oxo-2-phenyl-4 H -1-benzopyran-8-carboxylate hydrochloride. The empirical formula of flavoxate hydrochloride is C24 H25 NO4 ? HCl. The molecular weight is 427.94. The structural formula appears below.

URISPAS® is supplied in tablets for oral administration. Each round, white, film-coated URISPAS® tablet is debossed with the product name URISPAS® and contains flavoxate hydrochloride, 100 mg. Inactive ingredients consist of calcium phosphate, hypromellose, magnesium stearate, polyethylene glycol, starch and talc.

Urispas Indications And Usage

URISPAS® (flavoxate HCl) is indicated for symptomatic relief of dysuria, urgency, nocturia, suprapubic pain, frequency and incontinence as may occur in cystitis, prostatitis, urethritis, urethrocystitis/urethrotrigonitis. URISPAS® is not indicated for definitive treatment, but is compatible with drugs used for the treatment of urinary tract infections.

Urispas Contraindications

URISPAS® (flavoxate HCl) 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.

Urispas Side Effects

URISPAS® (flavoxate HCl) should be given cautiously in patients with suspected glaucoma.

Urispas Precautions

Information For Patients

Patients should be informed that if drowsiness and blurred vision occur, they should not operate a motor vehicle or machinery or participate in activities where alertness is required.

Carcinogenesis, Mutagenesis, Impairment Of Fertility

Mutagenicity studies and long-term studies in animals to determine the carcinogenic potential of URISPAS® (flavoxate HCl) have not been performed.

Pregnancy

Teratogenic Effects-Pregnancy Category B. Reproduction studies have been performed in rats and rabbits at doses up to 34 times the human dose and revealed no evidence of impaired fertility or harm to the fetus due to flavoxate HCl. There are, however, no well-controlled studies in pregnant women. Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed.

Nursing Mothers

It is not known whether this drug is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when URISPAS® is administered to a nursing woman.

Pediatric Use

Safety and effectiveness in children below the age of 12 years have not been established.

Urispas Overdosage

The oral LD50 for flavoxate HCl in rats is 4273 mg/kg. The oral LD50 for flavoxate HCl in mice is 1837 mg/kg.

It is not known whether flavoxate HCl is dialyzable.

Urispas Information For Patients

Patients should be informed that if drowsiness and blurred vision occur, they should not operate a motor vehicle or machinery or participate in activities where alertness is required.