Prescription Drug Information: Tolterodine Tartrate

TOLTERODINE TARTRATE- tolterodine tartrate capsule, extended release
Golden State Medical Supply, Inc.

1 INDICATIONS AND USAGE

Tolterodine tartrate extended-release capsules are indicated for the treatment of overactive bladder with symptoms of urge urinary incontinence, urgency, and frequency [see Clinical Studies (14)] .

2 DOSAGE AND ADMINISTRATION

2.1 Dosing Information

The recommended dose of tolterodine tartrate extended-release capsules is 4 mg once daily with water and swallowed whole. The dose may be lowered to 2 mg daily based on individual response and tolerability; however, limited efficacy data are available for tolterodine tartrate extended-release capsules 2 mg [see Clinical Studies (14)] .

2.2 Dosage Adjustment in Specific Populations

For patients with mild to moderate hepatic impairment (Child-Pugh Class A or B) or severe renal impairment (CCr 10-30 mL/min), the recommended dose of tolterodine tartrate extended-release capsules is 2 mg once daily. Tolterodine tartrate extended-release capsules are not recommended for use in patients with severe hepatic impairment (Child-Pugh Class C). Patients with CCr < 10 mL/min have not been studied and use of tolterodine tartrate extended-release capsules in this population is not recommended [see Warnings and Precautions (5.6), Use in Specific Populations (8.6, 8.7)].

2.3 Dosage Adjustment in Presence of Concomitant Drugs

For patients who are taking drugs that are potent inhibitors of CYP3A4 [e.g., ketoconazole, clarithromycin, ritonavir], the recommended dose of tolterodine tartrate extended-release capsules is 2 mg once daily [see Drug Interactions (7.2)] .

3 DOSAGE FORMS AND STRENGTHS

Tolterodine Tartrate Extended-Release Capsules are available containing 2 mg or 4 mg of tolterodine tartrate, USP.

  • The 2 mg capsules are hard-shell gelatin capsules with a green opaque cap and green opaque body filled with white to off-white beads. The capsules are axially printed with MYLAN over 3402 in black ink on the cap and body.
  • The 4 mg capsules are hard-shell gelatin capsules with a powder blue opaque cap and powder blue opaque body filled with white to off-white beads. The capsules are axially printed with MYLAN over 3404 in black ink on the cap and body.

4 CONTRAINDICATIONS

Tolterodine tartrate extended-release capsules are contraindicated in patients with urinary retention, gastric retention, or uncontrolled narrow-angle glaucoma. Tolterodine tartrate extended-release capsules are also contraindicated in patients with known hypersensitivity to the drug or its ingredients, or to fesoterodine fumarate extended-release tablets which, like tolterodine tartrate extended-release capsules, are metabolized to 5-hydroxymethyl tolterodine [see Warnings and Precautions (5.2), ( 5.3), ( 5.4)] .

5 WARNINGS AND PRECAUTIONS

5.1 Angioedema

Anaphylaxis and angioedema requiring hospitalization and emergency medical treatment have occurred with the first or subsequent doses of tolterodine tartrate extended-release capsules. In the event of difficulty in breathing, upper airway obstruction, or fall in blood pressure, tolterodine tartrate extended-release capsules should be discontinued and appropriate therapy promptly provided.

5.2 Urinary Retention

Administer tolterodine tartrate extended-release capsules with caution to patients with clinically significant bladder outflow obstruction because of the risk of urinary retention [see Contraindications (4)] .

5.3 Gastrointestinal Disorders

Administer tolterodine tartrate extended-release capsules with caution in patients with gastrointestinal obstructive disorders because of the risk of gastric retention.

Tolterodine tartrate extended-release capsules, like other antimuscarinic drugs, may decrease gastrointestinal motility and should be used with caution in patients with conditions associated with decreased gastrointestinal motility (e.g., intestinal atony) [see Contraindications (4)] .

5.4 Controlled Narrow-Angle Glaucoma

Administer tolterodine tartrate extended-release capsules with caution in patients being treated for narrow-angle glaucoma [see Contraindications (4)] .

5.5 Central Nervous System Effects

Tolterodine tartrate extended-release capsules are associated with anticholinergic central nervous system (CNS) effects [see Adverse Reactions (6.2)] including dizziness and somnolence [see Adverse Reactions (6.1)] . Patients should be monitored for signs of anticholinergic CNS effects, particularly after beginning treatment or increasing the dose. Advise patients not to drive or operate heavy machinery until the drug’s effects have been determined. If a patient experiences anticholinergic CNS effects, dose reduction or drug discontinuation should be considered.

5.6 Hepatic Impairment

The clearance of orally administered tolterodine immediate release was substantially lower in cirrhotic patients than in the healthy volunteers. For patients with mild to moderate hepatic impairment (Child-Pugh Class A or B), the recommended dose for tolterodine tartrate extended-release capsules is 2 mg once daily. Tolterodine tartrate extended-release capsules are not recommended for use in patients with severe hepatic impairment (Child-Pugh Class C) [see Dosage and Administration (2.2) and Use in Specific Populations (8.6)] .

5.7 Renal Impairment

Renal impairment can significantly alter the disposition of tolterodine and its metabolites. The dose of tolterodine tartrate extended-release capsules should be reduced to 2 mg once daily in patients with severe renal impairment (CCr: 10-30 mL/min). Patients with CCr < 10 mL/min have not been studied and use of tolterodine tartrate extended-release capsules in this population is not recommended [see Dosage and Administration (2.2) and Use in Specific Populations (8.7)] .

5.8 Myasthenia Gravis

Administer tolterodine tartrate extended-release capsules with caution in patients with myasthenia gravis, a disease characterized by decreased cholinergic activity at the neuromuscular junction.

5.9 Use in Patients with Congenital or Acquired QT Prolongation

In a study of the effect of tolterodine immediate release tablets on the QT interval [see Clinical Pharmacology (12.2)], the effect on the QT interval appeared greater for 8 mg/day (two times the therapeutic dose) compared to 4 mg/day and was more pronounced in CYP2D6 poor metabolizers (PM) than extensive metabolizers (EMs). The effect of tolterodine 8 mg/day was not as large as that observed after four days of therapeutic dosing with the active control moxifloxacin. However, the confidence intervals overlapped.

These observations should be considered in clinical decisions to prescribe tolterodine tartrate extended-release capsules to patients with a known history of QT prolongation or to patients who are taking Class IA (e.g., quinidine, procainamide) or Class III (e.g., amiodarone, sotalol) antiarrhythmic medications. There has been no association of Torsade de Pointes in the international post-marketing experience with tolterodine tartrate tablets or tolterodine tartrate extended-release capsules.

6 ADVERSE REACTIONS

Because clinical trials are conducted under widely varying conditions, 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 practice.

6.1 Clinical Trials Experience

The efficacy and safety of tolterodine tartrate extended-release capsules was evaluated in 1073 patients (537 assigned to tolterodine tartrate extended-release capsules; 536 assigned to placebo) who were treated with 2, 4, 6, or 8 mg/day for up to 15 months. These included a total of 1012 patients (505 randomized to tolterodine tartrate extended-release capsules 4 mg once daily and 507 randomized to placebo) enrolled in a randomized, placebo-controlled, double-blind, 12-week clinical efficacy and safety study.

Adverse events were reported in 52% (n = 263) of patients receiving tolterodine tartrate extended-release capsules and in 49% (n = 247) of patients receiving placebo. The most common adverse events reported by patients receiving tolterodine tartrate extended-release capsules were dry mouth, headache, constipation, and abdominal pain. Dry mouth was the most frequently reported adverse event for patients treated with tolterodine tartrate extended-release capsules, occurring in 23.4% of patients treated with tolterodine tartrate extended-release capsules and 7.7% of placebo-treated patients. Dry mouth, constipation, abnormal vision (accommodation abnormalities), urinary retention, and dry eyes are expected side effects of antimuscarinic agents. A serious adverse event was reported by 1.4% (n = 7) of patients receiving tolterodine tartrate extended-release capsules and by 3.6% (n = 18) of patients receiving placebo.

Table 1 lists the adverse events, regardless of causality, that were reported in the randomized, double-blind, placebo-controlled 12-week study at an incidence greater than placebo and in greater than or equal to 1% of patients treated with tolterodine tartrate extended-release capsules 4 mg once daily.

Table 1. Incidence * (%) of Adverse Events Exceeding Placebo Rate and Reported in ≥ 1% of Patients Treated with Tolterodine Tartrate Extended-Release Capsules (4 mg Daily) in a 12-Week, Phase 3 Clinical Trial
*
in nearest integer.

Body System

Adverse Event

% Tolterodine Tartrate Extended-Release Capsules

n = 505

% Placebo

n = 507

Autonomic Nervous

dry mouth

23

8

General

headache

6

5

fatigue

2

1

Central/Peripheral Nervous

dizziness

2

1

Gastrointestinal

constipation

6

4

abdominal pain

4

2

dyspepsia

3

1

Vision

xerophthalmia

3

2

vision abnormal

1

0

Psychiatric

somnolence

3

2

anxiety

1

0

Respiratory

sinusitis

2

1

Urinary

dysuria

1

0

The frequency of discontinuation due to adverse events was highest during the first 4 weeks of treatment. Similar percentages of patients treated with tolterodine tartrate extended-release capsules or placebo discontinued treatment due to adverse events. Dry mouth was the most common adverse event leading to treatment discontinuation among patients receiving tolterodine tartrate extended-release capsules [n = 12 (2.4%) vs. placebo n = 6 (1.2%)].

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