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Flavoxate Hydrochloride
Overview
Active ingredients
Source: NDC Directory| Ingredient | Strength | RxCUI | Monograph |
|---|---|---|---|
| Flavoxate Hydrochloride | 100 mg/1 | 1095229 | — |
Forms, strengths and routes
Source: NDC DirectoryPharmacologic classes are listed in the class section below.
Pharmacologic class
Source: NDC Directory| Class | Type | Browse |
|---|---|---|
| Cholinergic Muscarinic Antagonist [EPC] | EPC | All 33 members |
| Cholinergic Muscarinic Antagonists [MoA] | MoA | All 33 members |
Regulatory status
Source: Drugs@FDANDC Directory| Product | Trade name | Form | Strength | Ingredient | Status | TE | Flags |
|---|---|---|---|---|---|---|---|
| 076835-001 | FLAVOXATE HYDROCHLORIDE | TABLET | FLAVOXATE HYDROCHLORIDE | Prescription | AB |
Therapeutic equivalence
Source: Orange BookWhat this rating means: Therapeutically equivalent — bioequivalence demonstrated by in vivo or in vitro testing
Codes beginning with “A” indicate products the FDA considers therapeutically equivalent. Codes beginning with “B” indicate bioequivalence has not been established. See methodology.
Approval history
Source: Drugs@FDA| Type | No. | Action | Status | Date | Review |
|---|---|---|---|---|---|
| Original application | 1 | Approved | November 30, 2005 | — |
Prescribing information
Source: openFDA Drug LabelingReproduced verbatim from the Structured Product Labeling submitted to the FDA (effective 20251211). This is the manufacturer's labelling text, not a summary and not advice.
Indications and Usage
openFDA Drug LabelingINDICATIONS AND USAGE Flavoxate hydrochloride tablets are indicated for symptomatic relief of dysuria, urgency, nocturia, suprapubic pain, frequency and incontinence as may occur in cystitis, prostatitis, urethritis, urethrocystitis/urethrotrigonitis. Flavoxate hydrochloride tablets are not indicated for definitive treatment, but are compatible with drugs used for the treatment of urinary tract infections.
Dosage and Administration
openFDA Drug LabelingDOSAGE AND ADMINISTRATION Adults and children over 12 years of age One or two 100 mg tablets 3 or 4 times a day. With improvement of symptoms, the dose may be reduced. This drug cannot be recommended for infants and children under 12 years of age because safety and efficacy have not been demonstrated in this age group.
Contraindications
openFDA Drug LabelingCONTRAINDICATIONS Flavoxate hydrochloride 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.
Warnings
openFDA Drug LabelingWARNINGS Flavoxate hydrochloride should be given cautiously in patients with suspected glaucoma.
Adverse Reactions
openFDA Drug LabelingADVERSE REACTIONS The following adverse reactions have been observed, but there are not enough data to support an estimate of their frequency. Gastrointestinal: Nausea, vomiting, dry mouth. CNS: Vertigo, headache, mental confusion, especially in the elderly, drowsiness, nervousness. Hematologic: Leukopenia (one case which was 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. Renal: Dysuria.
Description
openFDA Drug LabelingDESCRIPTION Flavoxate hydrochloride 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 C 24 H 25 NO 4 •HCl. The molecular weight is 427.94. The structural formula appears below. Each tablet for oral administration contains 100 mg flavoxate hydrochloride. In addition, each tablet contains the following inactive ingredients: colloidal silicon dioxide, corn starch, dibasic calcium phosphate dihydrate, magnesium stearate, hypromellose, polydextrose, polyethylene glycol, titanium dioxide and triacetin. Structure Formula
Overdosage
openFDA Drug LabelingOVERDOSAGE The oral LD 50 for flavoxate hydrochloride in rats is 4273 mg/kg. The oral LD 50 for flavoxate hydrochloride in mice is 1837 mg/kg. It is not known whether flavoxate hydrochloride is dialyzable.
How Supplied / Storage and Handling
openFDA Drug LabelingHOW SUPPLIED Flavoxate hydrochloride 100 mg tablets are available as white, round biconvex, film-coated tablets, debossed “ Є58 ” on one side and plain on the other side. They are supplied as follows: NDC 24658-720-01 in bottles of 100 Store at 20° - 25°C (68° - 77°F) [See USP Controlled Room Temperature]. Dispense contents in a tight, light-resistant container. Distributed by: PuraCap Laboratories, LLC DBA Blu Pharmaceuticals Greenvale, NY 11548 Rev. 02-2025-00 MF058REV02/25 OE2582
Adverse event reports
Source: openFDA FAERSAttributed to this product's most-reported active ingredient: FLAVOXATE HYDROCHLORIDE. Combination products with more than six active ingredients are not attributed, because a report count summed across a long ingredient list measures the list, not the medicine.
Packaging and NDCs
Source: NDC Directory| Package NDC | Product NDC | Labeler | Description | Marketing start |
|---|---|---|---|---|
| 42806-058-01 | 42806-058 | Epic Pharma, LLC | 100 TABLET in 1 BOTTLE (42806-058-01) | February 21, 2011 |
| 42806-058-10 | 42806-058 | Epic Pharma, LLC | 1000 TABLET in 1 BOTTLE (42806-058-10) | February 21, 2011 |
| 24658-720-01 | 24658-720 | PuraCap Laboratories LLC dba Blu Pharmaceuticals | 100 TABLET in 1 BOTTLE (24658-720-01) | December 15, 2016 |
| 42806-058 | 42806-058 | Epic Pharma, LLC | — | February 21, 2011 |
| 24658-720 | 24658-720 | PuraCap Laboratories LLC dba Blu Pharmaceuticals | — | December 15, 2016 |
Sources for this page
| Dataset | Agency | Used for |
|---|---|---|
| NDC Directory | FDA | Identity, ingredients, strengths, forms, routes, labelers, packages |
| Drugs@FDA | FDA | Application, sponsor, submissions, review documents, marketing status |
| Orange Book | FDA | Therapeutic equivalence codes, reference drug flags, patents, exclusivity |
| Drug Labeling | FDA / NLM | Prescribing information reproduced above |
| FAERS | FDA | Adverse event report counts |
Generated September 25, 2026 · 11 sections on this page.