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FlavoxATE

Pronunciation

(fla VOKS ate)

Index Terms

  • Flavoxate Hydrochloride
  • Urispas

Dosage Forms

Excipient information presented when available (limited, particularly for generics); consult specific product labeling.

Tablet, Oral, as hydrochloride:

Generic: 100 mg

Pharmacologic Category

  • Antispasmodic Agent, Urinary

Pharmacology

Synthetic antispasmotic with similar actions to that of propantheline; it exerts a direct relaxant effect on smooth muscles via phosphodiesterase inhibition, providing relief to a variety of smooth muscle spasms; it is especially useful for the treatment of bladder spasticity, whereby it produces an increase in urinary capacity

Excretion

Urine (57%) within 24 hours

Onset of Action

55 minutes

Use: Labeled Indications

Antispasmodic to provide symptomatic relief of dysuria, nocturia, suprapubic pain, urgency, and incontinence in patients with cystitis, urethritis, urethrocystitis, urethrotrigonitis, and prostatitis

Contraindications

Pyloric or duodenal obstruction; GI hemorrhage; obstructive intestinal lesions; ileus; achalasia; obstructive uropathies of lower urinary tract (eg, BPH)

Dosing: Adult

Urinary spasms: Oral: 100-200 mg 3-4 times daily; reduce the dose when symptoms improve.

Dosing: Geriatric

Refer to adult dosing.

Dosing: Pediatric

Children >12 years: Refer to adult dosing.

Dosing: Renal Impairment

No dosage adjustment provided in manufacturer's labeling.

Dosing: Hepatic Impairment

No dosage adjustment provided in manufacturer's labeling.

Storage

Store at 20°C to 25°C (68°F to 77°F). Protect from light.

Drug Interactions

AbobotulinumtoxinA: Anticholinergic Agents may enhance the anticholinergic effect of AbobotulinumtoxinA. Monitor therapy

Acetylcholinesterase Inhibitors: May diminish the therapeutic effect of Anticholinergic Agents. Anticholinergic Agents may diminish the therapeutic effect of Acetylcholinesterase Inhibitors. Monitor therapy

Aclidinium: May enhance the anticholinergic effect of Anticholinergic Agents. Avoid combination

Analgesics (Opioid): Anticholinergic Agents may enhance the adverse/toxic effect of Analgesics (Opioid). Specifically, the risk for constipation and urinary retention may be increased with this combination. Monitor therapy

Anticholinergic Agents: May enhance the adverse/toxic effect of other Anticholinergic Agents. Exceptions: Levocabastine (Nasal). Monitor therapy

Cannabinoid-Containing Products: Anticholinergic Agents may enhance the tachycardic effect of Cannabinoid-Containing Products. Exceptions: Cannabidiol. Monitor therapy

Cimetropium: Anticholinergic Agents may enhance the anticholinergic effect of Cimetropium. Avoid combination

Eluxadoline: Anticholinergic Agents may enhance the constipating effect of Eluxadoline. Avoid combination

Gastrointestinal Agents (Prokinetic): Anticholinergic Agents may diminish the therapeutic effect of Gastrointestinal Agents (Prokinetic). Monitor therapy

Glucagon: Anticholinergic Agents may enhance the adverse/toxic effect of Glucagon. Specifically, the risk of gastrointestinal adverse effects may be increased. Avoid combination

Glycopyrrolate (Oral Inhalation): Anticholinergic Agents may enhance the anticholinergic effect of Glycopyrrolate (Oral Inhalation). Avoid combination

Ipratropium (Oral Inhalation): May enhance the anticholinergic effect of Anticholinergic Agents. Avoid combination

Itopride: Anticholinergic Agents may diminish the therapeutic effect of Itopride. Monitor therapy

Levosulpiride: Anticholinergic Agents may diminish the therapeutic effect of Levosulpiride. Avoid combination

Mianserin: May enhance the anticholinergic effect of Anticholinergic Agents. Monitor therapy

Mirabegron: Anticholinergic Agents may enhance the adverse/toxic effect of Mirabegron. Monitor therapy

OnabotulinumtoxinA: Anticholinergic Agents may enhance the anticholinergic effect of OnabotulinumtoxinA. Monitor therapy

Potassium Chloride: Anticholinergic Agents may enhance the ulcerogenic effect of Potassium Chloride. Management: Patients on drugs with substantial anticholinergic effects should avoid using any solid oral dosage form of potassium chloride. Avoid combination

Pramlintide: May enhance the anticholinergic effect of Anticholinergic Agents. These effects are specific to the GI tract. Consider therapy modification

Ramosetron: Anticholinergic Agents may enhance the constipating effect of Ramosetron. Monitor therapy

RimabotulinumtoxinB: Anticholinergic Agents may enhance the anticholinergic effect of RimabotulinumtoxinB. Monitor therapy

Secretin: Anticholinergic Agents may diminish the therapeutic effect of Secretin. Management: Avoid using drugs with substantial anticholinergic effects in patients receiving secretin whenever possible. If such agents must be used in combination, monitor closely for a diminished response to secretin. Consider therapy modification

Thiazide and Thiazide-Like Diuretics: Anticholinergic Agents may increase the serum concentration of Thiazide and Thiazide-Like Diuretics. Monitor therapy

Tiotropium: Anticholinergic Agents may enhance the anticholinergic effect of Tiotropium. Avoid combination

Topiramate: Anticholinergic Agents may enhance the adverse/toxic effect of Topiramate. Monitor therapy

Umeclidinium: May enhance the anticholinergic effect of Anticholinergic Agents. Avoid combination

Adverse Reactions

Frequency not defined.

Cardiovascular: Palpitations, tachycardia

Central nervous system: Confusion (especially in the elderly), drowsiness, headache, hyperpyrexia, nervousness, vertigo

Dermatologic: Rash, urticaria

Gastrointestinal: Nausea, vomiting, xerostomia

Genitourinary: Dysuria

Hematologic: Eosinophilia, leukopenia

Ocular: Blurred vision, intraocular pressure increased, ocular accommodation disorder

Warnings/Precautions

Concerns related to adverse effects:

• CNS effects: May cause CNS drowsiness and blurred vision, which may impair physical or mental abilities; patients must be cautioned about performing tasks which require mental alertness (eg, operating machinery or driving).

Disease-related concerns:

• Glaucoma: Use with caution in patients with suspected glaucoma.

Concurrent drug therapy issues:

• Sedatives: CNS effects may be potentiated when used with other sedative drugs or ethanol.

Special populations:

Monitoring Parameters

Monitor I & O closely

Pregnancy Risk Factor

B

Pregnancy Considerations

Adverse events have not been observed in animal reproduction studies.

Patient Education

• Discuss specific use of drug and side effects with patient as it relates to treatment. (HCAHPS: During this hospital stay, were you given any medicine that you had not taken before? Before giving you any new medicine, how often did hospital staff tell you what the medicine was for? How often did hospital staff describe possible side effects in a way you could understand?)

• Patient may experience headache, fatigue, blurred vision, dry mouth, vomiting, or nausea. Have patient report immediately to prescriber tachycardia, arrhythmia, confusion, severe anxiety, lack of sweat, or severe loss of strength and energy (HCAHPS).

• Educate patient about signs of a significant reaction (eg, wheezing; chest tightness; fever; itching; bad cough; blue skin color; seizures; or swelling of face, lips, tongue, or throat). Note: This is not a comprehensive list of all side effects. Patient should consult prescriber for additional questions.

Intended Use and Disclaimer: Should not be printed and given to patients. This information is intended to serve as a concise initial reference for healthcare professionals to use when discussing medications with a patient. You must ultimately rely on your own discretion, experience and judgment in diagnosing, treating and advising patients.

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