Flavoxate Hydrochloride

Indications

Flavoxate is indicated for symptomatic relief of dysuria, urgency, nocturia, suprapubic pain, frequency and incontinence as may occur in cystitis, prostatitis, urethritis and urethrocystitis.

Description

Flavoxate is a spasmolytic flavone derivative that acts by relaxing the smooth muscle in the urinary tract. Flavoxate is a competitive muscarinic receptor antagonist indicated for the treatment of overactive bladder with symptoms of urge urinary incontinence, urgency, and urinary frequency. Muscarinic receptors play an important role in several major cholin-ergically mediated functions, including contractions of urinary bladder smooth muscle and stimulation of salivary secretion.

Pharmacology

Flavoxate acts as a direct antagonist at muscarinic acetylcholine receptors in cholinergically innervated organs. Its anticholinergic-parasympatholytic action reduces the tonus of smooth muscle in the bladder, effectively reducing the number of required voids, urge incontinence episodes, urge severity and improving retention, facilitating increased volume per void.

Dosage & Administration

Adults and children over 12 years of age: 100 mg to 200 mg 3 times a day. With improvement of symptoms, the dose may be reduced.

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

Side Effects

Gastrointestinal: Nausea, vomiting, dry mouth.

CNS: Vertigo, headache, mental confusion, especially in the elderly, drowsiness, nervousness.

Hematologic: Leukopenia (which is reversible upon discontinuation of the drug).

Cardiovascular: Tachycardia and palpitation.

Allergic: Urticaria and other dermatoses, eosinophilia and hyperpyrexia.

Ophthalmic: Increased ocular tension, blurred vision, disturbance in eye accommodation.

Pregnancy & Lactation

Pregnancy Category B. This drug should be used during pregnancy only if clearly needed. It is not known whether this drug is excreted in human milk. Caution should be exercised when flavoxate is administered to a nursing woman.

Precautions & Warnings

Flavoxate should be given cautiously in patients with suspected glaucoma

Therapeutic Class

BPH/ Urinary retention/ Urinary incontinence

Storage Conditions

Keep below 30°C temperature, away from light & moisture. Keep out of the reach of children.