Oxybutynin Chloride

Manufacturer
Avera McKennan Hospital
Effective date
2016-01-08
Label type
HUMAN PRESCRIPTION DRUG LABEL
Version
1
Source
full-release
Hydrated at
2026-05-31 20:22:02

Label at a glance#

ProductOxybutynin Chloride
Active ingredientOXYBUTYNIN CHLORIDE
Label structure16 sections

Indications and uses

Oxybutynin chloride is a muscarinic antagonist indicated for the treatment of overactive bladder with symptoms of urge urinary incontinence, urgency, and frequency. Oxybutynin chloride extended-release tablets, USP are also indicated for the treatment of pediatric patients aged 6 years and older with symptoms of detrusor overactivity associated with a neurological condition (e.g., spina bifida).

Dosage and administration

Oxybutynin chloride extended-release tablets must be swallowed whole with the aid of liquids, and must not be chewed, divided, or crushed. Oxybutynin chloride extended-release tablets may be administered with or without food. The recommended starting dose of oxybutynin chloride extended-release tablets is 5 mg or 10 mg once daily at approximately the same time each day. Dosage may be adjusted in 5 mg increments to...

Storage and handling

5 mg tablets are light green, film-coated, round, unscored tablets with M over O 5 imprinted in black ink on one side of the tablet and blank on the other side. They are available as follows: NDC 0378-6605-01 bottles of 100 tablets NDC 0378-6605-05 bottles of 500 tablets NDC 69189-6605-1  single dose pack with 1 tablet as repackaged by Avera McKennan Hospital Store at 20° to 25°C (68° to 77°F). [See USP Contro...

Label contents#

Full prescribing information#

1 INDICATIONS AND USAGE

INDICATIONS & USAGE SECTION

Oxybutynin chloride is a muscarinic antagonist indicated for the treatment of overactive bladder with symptoms of urge urinary incontinence, urgency, and frequency.

Oxybutynin chloride extended-release tablets, USP are also indicated for the treatment of pediatric patients aged 6 years and older with symptoms of detrusor overactivity associated with a neurological condition (e.g., spina bifida).

2 DOSAGE AND ADMINISTRATION

DOSAGE & ADMINISTRATION SECTION

Oxybutynin chloride extended-release tablets must be swallowed whole with the aid of liquids, and must not be chewed, divided, or crushed.

Oxybutynin chloride extended-release tablets may be administered with or without food.

2.1 Adults

SPL UNCLASSIFIED SECTION

The recommended starting dose of oxybutynin chloride extended-release tablets is 5 mg or 10 mg once daily at approximately the same time each day. Dosage may be adjusted in 5 mg increments to achieve a balance of efficacy and tolerability (up to a maximum of 30 mg/day). In general, dosage adjustment may proceed at approximately weekly intervals.

2.2 Pediatric Patients Aged 6 Years of Age and Older

SPL UNCLASSIFIED SECTION

The recommended starting dose of oxybutynin chloride extended-release tablets is 5 mg once daily at approximately the same time each day. Dosage may be adjusted in 5 mg increments to achieve a balance of efficacy and tolerability (up to a maximum of 20 mg/day).

3 DOSAGE FORMS AND STRENGTHS

DOSAGE FORMS & STRENGTHS SECTION

Oxybutynin chloride extended-release tablets are available as 5 mg, 10 mg and 15 mg tablets for oral use:

The 5 mg tablets are light green, film-coated, round, unscored tablets with M over O 5 imprinted in black ink on one side of the tablet and blank on the other side.

The 10 mg tablets are peach, film-coated, round, unscored tablets with M over O 10 imprinted in black ink on one side of the tablet and blank on the other side.

The 15 mg tablets are white, film-coated, round, unscored tablets with M over O 15 imprinted in black ink on one side of the tablet and blank on the other side.

4 CONTRAINDICATIONS

CONTRAINDICATIONS SECTION

Oxybutynin chloride extended-release tablets are contraindicated in patients with urinary retention, gastric retention and other severe decreased gastrointestinal motility conditions, uncontrolled narrow-angle glaucoma.

Oxybutynin chloride extended-release tablets are also contraindicated in patients who have demonstrated hypersensitivity to the drug substance or other components of the product. There have been reports of hypersensitivity reactions, including anaphylaxis and angioedema.

5 WARNINGS AND PRECAUTIONS

WARNINGS AND PRECAUTIONS SECTION

5.1 Angioedema

SPL UNCLASSIFIED SECTION

Angioedema of the face, lips, tongue and/or larynx has been reported with oxybutynin. In some cases, angioedema occurred after the first dose. Angioedema associated with upper airway swelling may be life-threatening. If involvement of the tongue, hypopharynx, or larynx occurs, oxybutynin should be promptly discontinued and appropriate therapy and/or measures necessary to ensure a patent airway should be promptly provided.

5.2 Central Nervous System Effects

SPL UNCLASSIFIED SECTION

Oxybutynin is associated with anticholinergic central nervous system (CNS) effects [see Adverse Reactions (6)]. A variety of CNS anticholinergic effects have been reported, including hallucinations, agitation, confusion and somnolence. Patients should be monitored for signs of anticholinergic CNS effects, particularly in the first few months after beginning treatment or increasing the dose. Advise patients not to drive or operate heavy machinery until they know how oxybutynin chloride extended-release tablets affect them. If a patient experiences anticholinergic CNS effects, dose reduction or drug discontinuation should be considered.

Oxybutynin chloride extended-release tablets should be used with caution in patients with preexisting dementia treated with cholinesterase inhibitors due to the risk of aggravation of symptoms.

Oxybutynin chloride extended-release tablets should be used with caution in patients with Parkinson’s disease due to the risk of aggravation of symptoms.

5.3 Worsening of Symptoms of Myasthenia Gravis

SPL UNCLASSIFIED SECTION

Oxybutynin chloride extended-release tablets should be used with caution in patients with myasthenia gravis due to the risk of aggravation of symptoms.

5.4 Worsening of Symptoms of Decreased Gastrointestinal Motility in Patients with Autonomic Neuropathy

SPL UNCLASSIFIED SECTION

Oxybutynin chloride extended-release tablets should be used with caution in patients with autonomic neuropathy due to the risk of aggravation of symptoms of decreased gastrointestinal motility.

5.5 Urinary Retention

SPL UNCLASSIFIED SECTION

Oxybutynin chloride extended-release tablets should be administered with caution to patients with clinically significant bladder outflow obstruction because of the risk of urinary retention [see Contraindications (4)].

5.6 Gastrointestinal Adverse Reactions

SPL UNCLASSIFIED SECTION

Oxybutynin chloride extended-release tablets should be administered with caution to patients with gastrointestinal obstructive disorders because of the risk of gastric retention [see Contraindications (4)].

Oxybutynin chloride extended-release tablets, like other anticholinergic drugs, may decrease gastrointestinal motility and should be used with caution in patients with conditions such as ulcerative colitis and intestinal atony.

Oxybutynin chloride extended-release tablets should be used with caution in patients who have gastroesophageal reflux and/or who are concurrently taking drugs (such as bisphosphonates) that can cause or exacerbate esophagitis.

As with any other nondeformable material, caution should be used when administering oxybutynin chloride extended-release tablets to patients with preexisting severe gastrointestinal narrowing (pathologic or iatrogenic). There have been rare reports of obstructive symptoms in patients with known strictures in association with the ingestion of other drugs in nondeformable controlled-release formulations.

6 ADVERSE REACTIONS

ADVERSE REACTIONS SECTION

6.1 Clinical Trials Experience

SPL UNCLASSIFIED SECTION

Because clinical trials are conducted under widely varying conditions, the adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice.

The safety and efficacy of oxybutynin chloride extended-release tablets (5 to 30 mg/day) was evaluated in 774 adult subjects who participated in five double-blind, controlled clinical trials. In four of the five studies, oxybutynin chloride tablets (5 to 20 mg/day in 199 subjects) was an active comparator. Adverse reactions reported by ≥ 1% of subjects are shown in Table 1.

Table 1: Adverse Drug Reactions Reported by ≥ 1% of Oxybutynin Chloride Extended-release Tablets-Treated Adult Subjects in Five Double-Blind, Controlled Clinical Trials of Oxybutynin Chloride Extended-release Tablets

System/Organ Class

Preferred Term

Oxybutynin Chloride Extended-release Tablets

5 to 30 mg/day

n = 774

%

Oxybutynin Chloride Tablets*

5 to 20 mg/day

n = 199

%

Psychiatric Disorders

     Insomnia

3

5.5

Nervous System Disorders

     Headache

7.5

8

     Somnolence

5.6

14.1

     Dizziness

5

16.6

     Dysgeusia

1.6

1.5

Eye Disorders

     Vision blurred

4.3

9.6

     Dry eye

3.1

2.5

Respiratory, Thoracic and Mediastinal Disorders

     Cough

1.9

3

     Oropharyngeal pain

1.9

1.5

     Dry throat

1.7

2.5

     Nasal dryness

1.7

4.5

Gastrointestinal Disorders

     Dry mouth

34.9

72.4

     Constipation

8.7

15.1

     Diarrhea

7.9

6.5

     Dyspepsia

4.5

6

     Nausea

4.5

11.6

     Abdominal pain

1.6

2

     Vomiting

1.3

1.5

     Flatulence

1.2

2.5

     Gastro-esophageal reflux disease

1

0.5

Skin and Subcutaneous Tissue Disorders

     Dry skin

1.8

2.5

     Pruritus

1.3

1.5

Renal and Urinary Disorders

     Dysuria

1.9

2

     Urinary hesitation

1.9

8.5

     Urinary retention

1.2

3

General Disorders and Administration Site Conditions

     Fatigue

2.6

3

Investigations

     Residual urine volume†

2.3

3.5

* Immediate-release formulation

† The bundled term residual urine volume consists of the preferred terms residual urine volume and residual urine volume increased.

The discontinuation rate due to adverse reactions was 4.4% with oxybutynin chloride extended-release tablets compared to 0% with oxybutynin chloride tablets. The most frequent adverse reaction causing discontinuation of study medication was dry mouth (0.7%).

The following adverse reactions were reported by < 1% of oxybutynin chloride extended-release tablets-treated patients and at a higher incidence than placebo in clinical trials: Metabolism and Nutrition Disorders: anorexia, fluid retention; Vascular disorders: hot flush; Respiratory, thoracic and mediastinal disorders: dysphonia; Gastrointestinal Disorders: dysphagia, frequent bowel movements; General disorders and administration site conditions: chest discomfort, thirst.

6.2 Postmarketing Experience

SPL UNCLASSIFIED SECTION

The following additional adverse reactions have been reported from worldwide postmarketing experience with oxybutynin chloride extended-release tablets. Because postmarketing reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.

Psychiatric Disorders: psychotic disorder, agitation, hallucinations, memory impairment; Nervous System Disorders: convulsions; Eye Disorders: glaucoma; Cardiac Disorders: arrhythmia, tachycardia, QT interval prolongation; Vascular Disorders: flushing; Skin and Subcutaneous Tissue Disorders: rash; Renal and Urinary Disorders: impotence; General Disorders and Administration Site Conditions: hypersensitivity reactions, including angioedema with airway obstruction, urticaria, and face edema; anaphylactic reactions requiring hospitalization for emergency treatment; Injury, poisoning and procedural complications: fall.

Additional adverse events reported with some other oxybutynin chloride formulations include: cycloplegia, mydriasis, and suppression of lactation.

7 DRUG INTERACTIONS

DRUG INTERACTIONS SECTION

The concomitant use of oxybutynin with other anticholinergic drugs or with other agents which produce dry mouth, constipation, somnolence (drowsiness), and/or other anticholinergic-like effects may increase the frequency and/or severity of such effects.

Anticholinergic agents may potentially alter the absorption of some concomitantly administered drugs due to anticholinergic effects on gastrointestinal motility. This may be of concern for drugs with a narrow therapeutic index. Anticholinergic agents may also antagonize the effects of prokinetic agents, such as metoclopramide.

Mean oxybutynin chloride plasma concentrations were approximately 2-fold higher when oxybutynin chloride extended-release tablets were administered with ketoconazole, a potent CYP3A4 inhibitor. Other inhibitors of the cytochrome P450 3A4 enzyme system, such as antimycotic agents (e.g., itraconazole and miconazole) or macrolide antibiotics (e.g., erythromycin and clarithromycin), may alter oxybutynin mean pharmacokinetic parameters (i.e., Cmax and AUC). The clinical relevance of such potential interactions is not known. Caution should be used when such drugs are co-administered.

8 USE IN SPECIFIC POPULATIONS

USE IN SPECIFIC POPULATIONS SECTION

8.1 Pregnancy

PREGNANCY SECTION

Teratogenic Effects. Pregnancy Category B

TERATOGENIC EFFECTS SECTION

There are no adequate and well-controlled studies using oxybutynin chloride extended-release tablets in pregnant women. Oxybutynin chloride extended-release tablets should be used during pregnancy only if the potential benefit to the patient outweighs the risk to the patient and fetus. Women who become pregnant during oxybutynin chloride extended-release tablets treatment are encouraged to contact their physician.

Risk Summary

SPL UNCLASSIFIED SECTION

Based on animal data, oxybutynin is predicted to have a low probability of increasing the risk of adverse developmental effects above background risk.

Animal Data

SPL UNCLASSIFIED SECTION

Reproduction studies with oxybutynin chloride in the mouse, rat, hamster, and rabbit showed no evidence of impaired fertility or harm to the animal fetus.

8.3 Nursing Mothers

NURSING MOTHERS SECTION

It is not known whether oxybutynin is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when oxybutynin chloride extended-release tablets are administered to a nursing woman.

8.4 Pediatric Use

PEDIATRIC USE SECTION

The safety and efficacy of oxybutynin chloride extended-release tablets were studied in 60 children in a 24-week, open-label, non-randomized trial. Patients were aged 6 to 15 years, all had symptoms of detrusor overactivity in association with a neurological condition (e.g., spina bifida), all used clean intermittent catheterization, and all were current users of oxybutynin chloride. Study results demonstrated that administration of oxybutynin chloride extended-release tablets 5 to 20 mg/day was associated with an increase from baseline in mean urine volume per catheterization from 108 mL to 136 mL, an increase from baseline in mean urine volume after morning awakening from 148 mL to 189 mL, and an increase from baseline in the mean percentage of catheterizations without a leaking episode from 34% to 51%.

Urodynamic results were consistent with clinical results. Administration of oxybutynin chloride extended-release tablets resulted in an increase from baseline in mean maximum cystometric capacity from 185 mL to 254 mL, a decrease from baseline in mean detrusor pressure at maximum cystometric capacity from 44 cm H2O to 33 cm H2O, and a reduction in the percentage of patients demonstrating uninhibited detrusor contractions (of at least 15 cm H2O) from 60% to 28%.

The pharmacokinetics of oxybutynin chloride extended-release tablets in these patients were consistent with those reported for adults [see Clinical Pharmacology (12.3)].

Oxybutynin chloride extended-release tablets are not recommended in pediatric patients who cannot swallow the tablet whole without chewing, dividing, or crushing, or in children under the age of 6.

8.5 Geriatric Use

GERIATRIC USE SECTION

The rate and severity of anticholinergic effects reported by patients less than 65 years old and those 65 years and older were similar. The pharmacokinetics of oxybutynin chloride extended-release tablets were similar in all patients studied (up to 78 years of age).

8.6 Renal Impairment

SPL UNCLASSIFIED SECTION

There were no studies conducted with oxybutynin chloride extended-release tablets in patients with renal impairment.

8.7 Hepatic Impairment

SPL UNCLASSIFIED SECTION

There were no studies conducted with oxybutynin chloride extended-release tablets in patients with hepatic impairment.

10 OVERDOSAGE

OVERDOSAGE SECTION

The continuous release of oxybutynin from oxybutynin chloride extended-release tablets should be considered in the treatment of overdosage. Patients should be monitored for at least 24 hours. Treatment should be symptomatic and supportive. Activated charcoal as well as a cathartic may be administered.

Overdosage with oxybutynin chloride has been associated with anticholinergic effects including central nervous system excitation, flushing, fever, dehydration, cardiac arrhythmia, vomiting, and urinary retention.

Ingestion of 100 mg oxybutynin chloride in association with alcohol has been reported in a 13-year-old boy who experienced memory loss, and a 34-year-old woman who developed stupor, followed by disorientation and agitation on awakening, dilated pupils, dry skin, cardiac arrhythmia, and retention of urine. Both patients fully recovered with symptomatic treatment.

11 DESCRIPTION

DESCRIPTION SECTION

Oxybutynin chloride is an antispasmodic, muscarinic antagonist. Each oxybutynin chloride extended-release tablet, USP contains 5 mg, 10 mg or 15 mg of oxybutynin chloride USP, formulated as a once-a-day controlled-release tablet for oral administration. Oxybutynin chloride is administered as a racemate of R-and S-enantiomers.

Chemically, oxybutynin chloride is d,l (racemic) 4-diethylamino-2-butynyl phenyl-cyclohexylglycolate hydrochloride. The molecular formula of oxybutynin chloride is C22H31NO3•HCl.

Its structural formula is:

Oxybutynin Chloride Structural FormulaOxybutynin Chloride Structural Formula

Oxybutynin chloride, USP is a white crystalline solid with a molecular weight of 393.9. It is readily soluble in water and acids, but relatively insoluble in alkalis.

Oxybutynin chloride extended-release tablets also contain the following inactive ingredients: colloidal silicon dioxide, dibasic calcium phosphate (anhydrous), hypromellose, magnesium stearate, methacrylic acid copolymer dispersion, polydextrose, polyethylene glycol, polysorbate 80, povidone, sodium hydroxide, talc, titanium dioxide, triacetin and triethyl citrate. The 5 mg tablet also contains D&C Yellow No. 10 Aluminum Lake, FD&C Blue No. 1 Aluminum Lake and FD&C Red No. 40 Aluminum Lake; and the 10 mg tablet also contains FD&C Yellow No. 6 Aluminum Lake.

In addition, the imprinting ink contains black iron oxide, hypromellose and propylene glycol.

Meets USP Dissolution Test 2.

System Components and Performance

Oxybutynin chloride extended-release tablets are formulated to deliver oxybutynin chloride at a controlled rate over approximately 24 hours. The dosage form is comprised of a hydrophilic cellulose polymer matrix tablet surrounded by an enteric coating system. The enteric coat is insoluble in the low pH environment of the stomach. As the tablet passes through the stomach and enters the higher pH environment of the small intestine, the enteric coating dissolves and/or erodes to expose the polymer matrix tablet which swells and releases drug at a controlled rate via diffusion and/or erosion.

12 CLINICAL PHARMACOLOGY

CLINICAL PHARMACOLOGY SECTION

12.1 Mechanism of Action

MECHANISM OF ACTION SECTION

Oxybutynin relaxes bladder smooth muscle. Oxybutynin chloride exerts a direct antispasmodic effect on smooth muscle and inhibits the muscarinic action of acetylcholine on smooth muscle. No blocking effects occur at skeletal neuromuscular junctions or autonomic ganglia (antinicotinic effects).

Antimuscarinic activity resides predominantly in the R-isomer. A metabolite, desethyloxybutynin, has pharmacological activity similar to that of oxybutynin in in vitro studies.

12.2 Pharmacodynamics

PHARMACODYNAMICS SECTION

In patients with conditions characterized by involuntary bladder contractions, cystometric studies have demonstrated that oxybutynin increases bladder (vesical) capacity, diminishes the frequency of uninhibited contractions of the detrusor muscle, and delays the initial desire to void.

12.3 Pharmacokinetics

PHARMACOKINETICS SECTION

Absorption

SPL UNCLASSIFIED SECTION

Following the first dose of oxybutynin chloride extended-release tablets, oxybutynin plasma concentrations rise for 4 to 6 hours; thereafter steady concentrations are maintained for up to 24 hours, minimizing fluctuations between peak and trough concentrations associated with oxybutynin.

The relative bioavailabilities of R-and S-oxybutynin from oxybutynin chloride extended-release tablets are 156% and 187%, respectively, compared with oxybutynin. The mean pharmacokinetic parameters for R- and S-oxybutynin are summarized in Table 2. The plasma concentration-time profiles for R- and S-oxybutynin are similar in shape; Figure 1 shows the profile for R-oxybutynin.

Table 2: Mean (SD) R- and S-Oxybutynin Pharmacokinetic Parameters Following a Single Dose of Oxybutynin Chloride Extended-release Tablets 10 mg (n = 43)

Parameters (units)

R-Oxybutynin

S-Oxybutynin

Cmax (ng/mL)

1

(0.6)

1.8

(1)

Tmax (h)

12.7

(5.4)

11.8

(5.3)

t1/2 (h)

13.2

(6.2)

12.4

(6.1)

AUC(0-48) (ng•h/mL)

18.4

(10.3)

34.2

(16.9)

AUCinf (ng•h/mL)

21.3

(12.2)

39.5

(21.2)

Figure 1: Mean R-Oxybutynin Plasma Concentrations Following a Single Dose of Oxybutynin Chloride Extended-release Tablets 10 mg and Oxybutynin 5 mg Administered Every 8 hours (n...Figure 1: Mean R-Oxybutynin Plasma Concentrations Following a Single Dose of Oxybutynin Chloride Extended-release Tablets 10 mg and Oxybutynin 5 mg Administered Every 8 hours (n...

Figure 1: Mean R-Oxybutynin Plasma Concentrations Following a Single Dose of Oxybutynin Chloride Extended-release Tablets 10 mg and Oxybutynin 5 mg Administered Every 8 hours (n = 23 for Each Treatment).

Figure 1: Mean R-Oxybutynin Plasma Concentrations Following a Single Dose of Oxybutynin Chloride Extended-release Tablets 10 mg and Oxybutynin 5 mg Administered Every 8 hours (n = 23 for Each Treatment).

Steady state oxybutynin plasma concentrations are achieved by Day 3 of repeated oxybutynin chloride extended-release tablets dosing, with no observed drug accumulation or change in oxybutynin and desethyloxybutynin pharmacokinetic parameters.

Oxybutynin chloride extended-release tablets steady state pharmacokinetics were studied in 19 children aged 5 to 15 years with detrusor overactivity associated with a neurological condition (e.g., spina bifida). The children were on oxybutynin chloride extended-release tablets total daily dose ranging from 5 mg to 20 mg (0.10 to 0.77 mg/kg). Sparse sampling technique was used to obtain serum samples. When all available data are normalized to an equivalent of 5 mg per day of oxybutynin chloride extended-release tablets, the mean pharmacokinetic parameters derived for R- and S-oxybutynin and R- and S-desethyloxybutynin are summarized in Table 3. The plasma-time concentration profiles for R- and S-oxybutynin are similar in shape; Figure 2 shows the profile for R-oxybutynin when all available data are normalized to an equivalent of 5 mg per day.

Table 3: Mean ± SD R- and S-Oxybutynin and R- and S-Desethyloxybutynin Pharmacokinetic Parameters in Children Aged 5 to 15 Following Administration of 5 mg to 20 mg Oxybutynin Chloride Extended-release Tablets Once Daily (n = 19), All Available Data Normalized to an Equivalent of Oxybutynin Chloride Extended-release Tablets 5 mg Once Daily

R-Oxybutynin

S-Oxybutynin

R-Desethyloxybutynin

S-Desethyloxybutynin

Cmax (ng/mL)

0.7 ± 0.4

1.3 ± 0.8

7.8 ± 3.7

4.2 ± 2.3

Tmax (h)

5

5

5

5

AUC (ng•h/mL)

12.8 ± 7

23.7 ± 14.4

125.1 ± 66.7

73.6 ± 47.7

Figure 2: Mean Steady State (± SD) R-Oxybutynin Plasma Concentrations following Administration of 5 to 20 mg Oxybutynin Chloride Extended-release Tablets Once Daily in Children ...Figure 2: Mean Steady State (± SD) R-Oxybutynin Plasma Concentrations following Administration of 5 to 20 mg Oxybutynin Chloride Extended-release Tablets Once Daily in Children ...

Figure 2: Mean Steady State (± SD) R-Oxybutynin Plasma Concentrations Following Administration of 5 mg to 20 mg Oxybutynin Chloride Extended-release Tablets Once Daily in Children Aged 5 to 15. Plot Represents All Available Data Normalized to an Equivalent of Oxybutynin Chloride Extended-release Tablets 5 mg Once Daily.

Figure 2: Mean Steady State (± SD) R-Oxybutynin Plasma Concentrations Following Administration of 5 mg to 20 mg Oxybutynin Chloride Extended-release Tablets Once Daily in Children Aged 5 to 15. Plot Represents All Available Data Normalized to an Equivalent of Oxybutynin Chloride Extended-release Tablets 5 mg Once Daily.

Food Effects

SPL UNCLASSIFIED SECTION

The rate and extent of absorption and metabolism of oxybutynin are similar under fed and fasted conditions.

Distribution

SPL UNCLASSIFIED SECTION

Oxybutynin is widely distributed in body tissues following systemic absorption. The volume of distribution is 193 L after intravenous administration of 5 mg oxybutynin chloride. Both enantiomers of oxybutynin are highly bound (> 99%) to plasma proteins. Both enantiomers of N-desethyloxybutynin are also highly bound (> 97%) to plasma proteins. The major binding protein is alpha-1 acid glycoprotein.

Metabolism

SPL UNCLASSIFIED SECTION

Oxybutynin is metabolized primarily by the cytochrome P450 enzyme systems, particularly CYP3A4 found mostly in the liver and gut wall. Its metabolic products include phenylcyclohexylglycolic acid, which is pharmacologically inactive, and desethyloxybutynin, which is pharmacologically active. Following oxybutynin chloride extended-release tablets administration, plasma concentrations of R- and S-desethyloxybutynin are 73% and 92%, respectively, of concentrations observed with oxybutynin.

Excretion

SPL UNCLASSIFIED SECTION

Oxybutynin is extensively metabolized by the liver, with less than 0.1% of the administered dose excreted unchanged in the urine. Also, less than 0.1% of the administered dose is excreted as the metabolite desethyloxybutynin.

Dose Proportionality

SPL UNCLASSIFIED SECTION

Pharmacokinetic parameters of oxybutynin and desethyloxybutynin (Cmax and AUC) following administration of 5 mg to 20 mg of oxybutynin chloride extended-release tablets are dose proportional.

Use in Specific Populations

USE IN SPECIFIC POPULATIONS SECTION

Pediatric

SPL UNCLASSIFIED SECTION

The pharmacokinetics of oxybutynin chloride extended-release tablets were evaluated in 19 children aged 5 to 15 years with detrusor overactivity associated with a neurological condition (e.g., spina bifida). The pharmacokinetics of oxybutynin chloride extended-release tablets in these pediatric patients were consistent with those reported for adults (see Tables 2 and 3, and Figures 1 and 2 above).

Gender

SPL UNCLASSIFIED SECTION

There are no significant differences in the pharmacokinetics of oxybutynin in healthy male and female volunteers following administration of oxybutynin chloride extended-release tablets.

Race

SPL UNCLASSIFIED SECTION

Available data suggest that there are no significant differences in the pharmacokinetics of oxybutynin based on race in healthy volunteers following administration of oxybutynin chloride extended-release tablets.

13 NONCLINICAL TOXICOLOGY

NONCLINICAL TOXICOLOGY SECTION

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility

CARCINOGENESIS & MUTAGENESIS & IMPAIRMENT OF FERTILITY SECTION

A 24-month study in rats at dosages of oxybutynin chloride of 20, 80, and 160 mg/kg/day showed no evidence of carcinogenicity. These doses are approximately 6, 25, and 50 times the maximum human exposure, based on a human equivalent dose taking into account normalization of body surface area.

Oxybutynin chloride showed no increase of mutagenic activity when tested in Schizosaccharomyces pompholiciformis, Saccharomyces cerevisiae, and Salmonella typhimurium test systems.

Reproduction studies with oxybutynin chloride in the mouse, rat, hamster, and rabbit showed no evidence of impaired fertility.

14 CLINICAL STUDIES

CLINICAL STUDIES SECTION

Oxybutynin chloride extended-release tablets were evaluated for the treatment of patients with overactive bladder with symptoms of urge urinary incontinence, urgency, and frequency in three controlled efficacy studies. The majority of patients were Caucasian (89%) and female (91.9%) with a mean age of 59 years (range, 18 to 98 years). Entry criteria required that patients have urge or mixed incontinence (with a predominance of urge) as evidenced by ≥ 6 urge incontinence episodes per week and ≥ 10 micturitions per day. Study 1 was a fixed-dose escalation design, whereas the other two studies used a dose-adjustment design in which each patient’s final dose was adjusted to a balance between improvement of incontinence symptoms and tolerability of side effects. All three studies included patients known to be responsive to oxybutynin or other anticholinergic medications, and these patients were maintained on a final dose for up to 2 weeks.

The efficacy results for the three controlled trials are presented in the following tables and figures.

Number of Urge Incontinence Episodes per WeekNumber of Urge Incontinence Episodes per Week

Number of Urge Urinary Incontinence Episodes per Week

Number of Urge Urinary Incontinence Episodes per Week

16 HOW SUPPLIED/STORAGE AND HANDLING

HOW SUPPLIED SECTION

5 mg tablets are light green, film-coated, round, unscored tablets with M over O 5 imprinted in black ink on one side of the tablet and blank on the other side. They are available as follows:

NDC 0378-6605-01 bottles of 100 tablets

NDC 0378-6605-05 bottles of 500 tablets

NDC 69189-6605-1 single dose pack with 1 tablet as repackaged by Avera McKennan Hospital

16.1 Storage

SPL UNCLASSIFIED SECTION

Store at 20° to 25°C (68° to 77°F). [See USP Controlled Room Temperature.]

Protect from moisture and humidity.

Dispense in a tight, light-resistant container as defined in the USP using a child-resistant closure.

17 PATIENT COUNSELING INFORMATION

INFORMATION FOR PATIENTS SECTION

  • Patients should be informed that oxybutynin may produce angioedema that could result in life threatening airway obstruction. Patients should be advised to promptly discontinue oxybutynin therapy and seek immediate medical attention if they experience swelling of the tongue, edema of the laryngopharynx, or difficulty breathing.
  • Patients should be informed that anticholinergic (antimuscarinic) agents such as oxybutynin chloride extended-release tablets, may produce clinically significant adverse reactions related to anticholinergic activity such as:
    • Urinary retention and constipation
    • Heat prostration due to decreased sweating. Heat prostration can occur when anticholinergic medicines are administered in the presence of high environmental temperature.
  • Patients should be informed that anticholinergic medicines such as oxybutynin chloride extended-release tablets may produce drowsiness (somnolence), dizziness or blurred vision. Patients should be advised to exercise caution in decisions to engage in potentially dangerous activities until oxybutynin chloride extended-release tablets effects have been determined.
  • Patients should be informed that alcohol may enhance the drowsiness caused by anticholinergic agents such as oxybutynin chloride extended-release tablets.
  • Patients should be informed that oxybutynin chloride extended-release tablets should be swallowed whole with the aid of liquids. Patients should not chew, divide, or crush tablets.
  • Oxybutynin chloride extended-release tablets should be taken at approximately the same time each day.

For more information call Mylan Pharmaceuticals Inc. at 1-877-446-3679 (1-877-4-INFO-RX).

Mylan Pharmaceuticals Inc.
Morgantown, WV 26505 U.S.A.

REVISED OCTOBER 2015
OXBN:R10

PRINCIPAL DISPLAY PANEL - 5 mg

PACKAGE LABEL.PRINCIPAL DISPLAY PANEL

Oxybutynin XL 5 mg tablet labelOxybutynin XL 5 mg tablet label

DailyMed RxNorm Mappings#

RxCUI, RxNorm string, TTY table
RxCUIRxNorm stringTTYSPL version
863636oxyBUTYnin chloride 5 MG 24HR Extended Release Oral TabletPSN1
86363624 HR oxybutynin chloride 5 MG Extended Release Oral TabletSCD1
863636oxybutynin chloride 5 MG 24 HR Extended Release Oral TabletSY1

DailyMed Pharmacologic Classes#

Class, Version, Type table
ClassVersionTypeEffective
OXYBUTYNIN Pharmacologic Class Indexing2Indexing - Pharmacologic Class20180813

DailyMed Product Concepts#

Product concept, Relation, Version table
Product conceptRelationVersionEffective
3544f362-07fc-93b1-457b-1fba00be087aProduct name820230316
4daffbf2-44c8-ca46-d284-5db69e1e6ef4Product name820210525
982338c6-c45c-b6b4-1452-14b01fbdf98dProduct name220180801
054197ba-7ed3-0ddb-321e-dbb51c0fe9b6Product name220171212
3544f362-07fc-93b1-457b-1fba00be087aProduct name220171212
8b00ae7e-01f2-f83c-632e-edfc23808364Product name120140508

FDA-Initiated Inactive NDC Indexing#

DailyMed Package Descriptions#

Package NDC, Product, Description table
Package NDCProductDescriptionFormQuantityStrengthSPL version
69189-6605-1Oxybutynin Chloride1 in 1 DOSE PACKTABLET, FILM COATED, EXTENDED RE11

DailyMed Dashboard NDC Coverage#

NDC, Dashboard title, SPL version table
NDCDashboard titleSPL versionValidationDashboard ZIP
69189-6605OXYBUTYNIN CHLORIDE TABLET, FILM COATED, EXTENDED RELEASE [AVERA MCKENNAN HOSPITAL]1Legacy NDC, 1 package rows20160302_32a742f5-a683-46ba-90dd-5778b2c00308.zip

DailyMed Billing Units#

Package NDC, Billing unit, Product NDC table
Package NDCBilling unitProduct NDCDailyMed indexing SPLSPL versionEffective
0378-6605-01EA - Each0378-66052caa9674-b260-45ab-b1cd-817633a6a9da12012-07-24
0378-6605-05EA - Each0378-6605774aa5c1-dcc5-4069-bd43-5e788e9cec6c12012-07-24

Products#

Every source-derived product name is available through these pages.

DailyMed product names page 1 of 1 · 21 matching rows.

NDC Codes#

Product NDC, Package NDC table
Product NDCPackage NDC
69189-660569189-6605-1
0378-6605

Ingredients#

Every source-derived ingredient row is available through these pages.

DailyMed ingredient rows page 1 of 1 · 20 matching rows.

Source Document#

Source XML

Orange Book application contexts#

All distinct exact application/product contexts derived from this label’s complete NDC list are paginated below.

Orange Book application contexts page 1 of 1 · 1 matching rows.

Source provenance: Browse the complete Orange Book source catalog · source snapshot 43.

Orange Book products#

Current product rows page 1 of 1 · 1 matching rows.

Application-product, Trade name, Ingredient table
Application-productTrade nameIngredientStrengthDosage form / routeTE codesRLD / RSApproval date
A076702-001OXYBUTYNIN CHLORIDEOXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-09

Observed Orange Book product history#

Observed FDA ZIP history: Each table is queried independently by exact application/product key from successfully parsed Orange Book snapshots. Capture times identify archived source observations; absence or a change between snapshots is not inferred. FDA publication files that were not recoverable as structured ZIP data are not represented as states.

Product history page 1 of 2 · 43 observed states.

Captured, Edition, Application-product table
CapturedEditionApplication-productTrade nameStrengthDosage form / routeProduct TE source textRLD / RSApproval dateSource SHA-256
2026-09-14 22:38:342026-08A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-0984e616aacf4f…
2026-08-18 06:07:402026-07A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-09caaa826d4ba7…
2026-02-19 14:30 UTC2026-02A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-09011fe1cb6892…
2025-12-14 10:44 UTC · 2 captures of this ZIP2025-12A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-0931067a03dcf5…
2025-08-23 18:47 UTC2025-08A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-096a471c1ec25d…
2025-03-22 03:13 UTC · 3 captures of this ZIP2025-03A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-09fd3edfee7708…
2025-02-26 10:13 UTC · 3 captures of this ZIP2025-02A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-09b8a1b40f171c…
2025-01-19 17:59 UTC · 7 captures of this ZIP2025-01A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-0903ed91905a0d…
2024-12-13 21:23 UTC · 2 captures of this ZIP2024-12A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-092680178bc6a6…
2024-09-14 05:58 UTC · 2 captures of this ZIP2024-09A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-095bbf6a4d5a75…
2024-11-08 22:44 UTC · 3 captures of this ZIP2024-11A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-09d8e5a09893c0…
2024-10-29 15:01 UTC2024-10A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-09d06236e962d9…
2024-08-13 05:28 UTC · 3 captures of this ZIP2024-08A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-0979d66fd596c7…
2024-07-13 05:37 UTC · 2 captures of this ZIP2024-07A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-09301d65b070ca…
2024-06-18 03:08 UTC · 5 captures of this ZIP2024-06A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-091e350fbaab3a…
2024-05-31 18:47 UTC2024-05A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-098072bd15b7f6…
2022-06-29 02:47 UTC · 2 captures of this ZIP2022-06A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-095c6f7cd8ea54…
2022-04-08 23:34 UTC2022-04A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-095d02ea3f76ae…
2022-04-04 05:41 UTC2022-04A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-094b0b4de00fa7…
2019-12-13 00:20 UTC2019-12A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORALAB2006-11-0974a2ff9319b5…
2022-03-09 01:35 UTC2022-03A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-09bb7c543d1eb4…
2021-12-28 21:50 UTC2021-12A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-09782e0a99824c…
2021-05-05 16:15 UTC · 3 captures of this ZIP2021-05A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-0987673890dc5c…
2021-03-12 10:30 UTC2021-03A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-095aa47cf7b7d7…
2020-12-22 03:56 UTC2020-12A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-098869cabd3fbd…
2020-11-12 02:37 UTC2020-11A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-09c0c555d07b60…
2019-12-14 00:12 UTC2019-12A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORALAB2006-11-093f01610625f2…
2019-09-15 20:21 UTC2019-09A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORALAB2006-11-09b00525d2431f…
2019-07-19 19:46 UTC2019-07A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORALAB2006-11-09ea99ee380514…
2024-03-16 18:09 UTC · 4 captures of this ZIP2024-03A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-096a51e52b5d6a…
2024-02-18 07:12 UTC2024-02A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-091c564ffb4f44…
2023-12-20 04:57 UTC2023-12A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-09ea1830bbd6c7…
2023-11-28 05:40 UTC · 2 captures of this ZIP2023-11A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-09a72a2bbeb626…
2023-10-25 00:34 UTC · 2 captures of this ZIP2023-10A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-099b2671bbb829…
2023-07-15 15:27 UTC · 2 captures of this ZIP2023-07A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-09a67488948f0b…
2023-06-13 01:57 UTC · 3 captures of this ZIP2023-06A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-093f0d92c62455…
2023-05-13 08:27 UTC2023-05A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-09053a50430f4f…
2023-01-26 05:58 UTC2023-01A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-093bdfa0b2c4d7…
2022-11-12 20:34 UTC · 5 captures of this ZIP2022-11A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-093a93d1ddd44b…
2022-10-28 04:53 UTC2022-10A076702-001OXYBUTYNIN CHLORIDE5MGTABLET, EXTENDED RELEASE / ORAL2006-11-09f41ea6bd6efb…

Observed Orange Book normalized TE history#

Captured, Edition, Application-product table
CapturedEditionApplication-productTE codeOrderSource SHA-256
2019-12-13 00:20 UTC2019-12A076702-001AB174a2ff9319b5…
2019-12-14 00:12 UTC2019-12A076702-001AB13f01610625f2…
2019-09-15 20:21 UTC2019-09A076702-001AB1b00525d2431f…
2019-07-19 19:46 UTC2019-07A076702-001AB1ea99ee380514…

openFDA label cross-check#

OpenFDA label data provides additional search and identifier links. DailyMed’s Structured Product Label is the canonical label on FDA.report. Matching records are deduplicated before they are shown below.

Matched openFDA labels page 1 of 1 · 1 matching rows.

Brand, Generic, Manufacturer table
BrandGenericManufacturerSPL set IDEffective dateAvailable safety fieldsJoin
f0dac68c-e4c0-4857-bbff-83ff9ae7352032a742f5-a683-46ba-90dd-5778b2c003082016-01-08Warnings, Adverse reactionsExact identifier
spl id: f0dac68c-e4c0-4857-bbff-83ff9ae73520
spl set id: 32a742f5-a683-46ba-90dd-5778b2c00308

Reported adverse events (FAERS/openFDA)#

Adverse event summaries are temporarily unavailable. Other product information remains available.