Tolterodine Tartrate

INDICATIONS AND USAGE Tolterodine tartrate tablets are indicated for the treatment of overactive bladder with symptoms of urge urinary incontinence, urgency, and frequency.

DOSAGE AND ADMINISTRATION The initial recommended dose of tolterodine tartrate tablets is 2 mg twice daily. The dose may be lowered to 1 mg twice daily based on individual response and tolerability. For patients with significantly reduced hepatic or renal function or who are currently taking drugs that are potent inhibitors of CYP3A4, the recommended dose of tolterodine tartrate tablets is 1 mg twice daily (see PRECAUTIONS , General , PRECAUTIONS , Reduced Hepatic and Renal Function, and PRECAUTIONS , Drug Interactions ).

CONTRAINDICATIONS Tolterodine tartrate tablets are contraindicated in patients with urinary retention, gastric retention, or uncontrolled narrow-angle glaucoma. Tolterodine tartrate tablets are also contraindicated in patients who have demonstrated hypersensitivity to the drug or its ingredients, or to fesoterodine fumarate extended-release tablets which, like tolterodine tartrate tablets, are metabolized to 5-hydroxymethyl tolterodine.

ADVERSE REACTIONS The Phase 2 and 3 clinical trial program for tolterodine tartrate tablets included 3071 patients who were treated with tolterodine tartrate tablets (N=2133) or placebo (N=938). The patients were treated with 1, 2, 4, or 8 mg/day for up to 12 months. No differences in the safety profile of tolterodine were identified based on age, gender, race, or metabolism. The data described below reflect exposure to tolterodine tartrate tablets 2 mg bid in 986 patients and to placebo in 683 patients exposed for 12 weeks in five Phase 3, controlled clinical studies. 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. The adverse reaction information from clinical trials does, however, provide a basis for identifying the adverse events that appear to be related to drug use and approximating rates. Sixty-six percent of patients receiving tolterodine tartrate tablets 2 mg bid reported adverse events versus 56% of placebo patients. The most common adverse events reported by patients receiving tolterodine tartrate tablets were dry mouth, headache, constipation, vertigo/dizziness, and abdominal pain. Dry mouth, constipation, abnormal vision (accommodation abnormalities), urinary retention, and xerophthalmia are expected side effects of antimuscarinic agents. Dry mouth was the most frequently reported adverse event for patients treated with tolterodine tartrate tablets 2 mg bid in the Phase 3 clinical studies, occurring in 34.8% of patients treated with tolterodine tartrate tablets and 9.8% of placebo-treated patients. One percent of patients treated with tolterodine tartrate tablets discontinued treatment due to dry mouth. The frequency of discontinuation due to adverse events was highest during the first 4 weeks of treatment. Seven percent of patients treated with tolterodine tartrate tablets 2 mg bid discontinued treatment due to adverse events versus 6% of placebo patients. The most common adverse events leading to discontinuation of tolterodine tartrate tablets were dizziness and headache. Three percent of patients treated with tolterodine tartrate tablets 2 mg bid reported a serious adverse event versus 4% of placebo patients. Significant ECG changes in QT and QTc have not been demonstrated in clinical-study patients treated with tolterodine tartrate tablets 2 mg bid. Table 5 lists the adverse events reported in 1% or more of the patients treated with tolterodine tartrate tablets 2 mg bid in the 12-week studies. The adverse events are reported regardless of causality. Table 5. Incidence* (%) of Adverse Events Exceeding Placebo Rate and Reported in >1% of Patients Treated with Tolterodine Tartrate Tablets (2 mg bid) in 12-week, Phase 3 Clinical Studies Body System Adverse Event % Tolterodine Tartrate Tablets N=986 % Placebo N=683 Autonomic Nervous accommodation abnormal dry mouth 2 35 1 10 General chest pain fatigue headache influenza-like symptoms 2 4 7 3 1 3 5 2 Central/Peripheral Nervous vertigo/dizziness 5 3 Gastrointestinal abdominal pain constipation diarrhea dyspepsia 5 7 4 4 3 4 3 1 Urinary dysuria 2 1 Skin/Appendages dry skin 1 0 Musculoskeletal arthralgia 2 1 Vision xerophthalmia 3 2 Psychiatric somnolence 3 2 Metabolic/Nutritional weight gain 1 0 Resistance Mechanism infection 1 0 * in nearest integer. Post-marketing Surveillance The following events have been reported in association with tolterodine use in worldwide post-marketing experience: General : anaphylaxis and angioedema; Cardiovascular: tachycardia, palpitations, peripheral edema; Central/Peripheral Nervous: confusion, disorientation, memory impairment, hallucinations. Reports of aggravation of symptoms of dementia (e.g., confusion, disorientation, delusion) have been reported after tolterodine therapy was initiated in patients taking cholinestera …

Drug Interactions CYP3A4 Inhibitors: Ketoconazole, an inhibitor of the drug metabolizing enzyme CYP3A4, significantly increased plasma concentrations of tolterodine when coadministered to subjects who were poor metabolizers (see CLINICAL PHARMACOLOGY , Variability in Metabolism and Drug-Drug Interactions ). For patients receiving ketoconazole or other potent CYP3A4 inhibitors such as other azole antifungals (e.g., itraconazole, miconazole) or macrolide antibiotics (e.g., erythromycin, clarithromycin) or cyclosporine or vinblastine, the recommended dose of tolterodine tartrate tablets is 1 mg twice daily (see DOSAGE AND ADMINISTRATION ).

DESCRIPTION Tolterodine tartrate tablets contain tolterodine tartrate. The active moiety, tolterodine, is a muscarinic receptor antagonist. The chemical name of tolterodine tartrate is (R)-2-[3[bis(1-methylethyl)-amino]1-phenylpropyl]-4-methylphenol [R-(R*,R*)]-2,3dihydroxybutanedioate (1:1) (salt). The empirical formula of tolterodine tartrate is C 26 H 37 NO 7 , and its molecular weight is 475.6. The structural formula of tolterodine tartrate is represented below: Tolterodine tartrate is a white, crystalline powder. The pKa value is 9.87 and the solubility in water is 12 mg/mL. It is soluble in methanol, slightly soluble in ethanol, and practically insoluble in toluene. The partition coefficient (Log D) between n-octanol and water is 1.83 at pH 7.3. Tolterodine tartrate tablets for oral administration contain 1 or 2 mg of tolterodine tartrate. The inactive ingredients are dibasic calcium phosphate dihydrate, microcrystalline cellulose, sodium starch glycolate, colloidal silicon dioxide, magnesium stearate, opadry white 03A18585 [hypromellose, purified stearic acid, titanium dioxide, microcrystalline cellulose]. structure

OVERDOSAGE A 27-month-old child who ingested 5 to 7 tolterodine tartrate tablets 2 mg was treated with a suspension of activated charcoal and was hospitalized overnight with symptoms of dry mouth. The child fully recovered. Management of Overdosage Overdosage with tolterodine tartrate tablets can potentially result in severe central anticholinergic effects and should be treated accordingly. ECG monitoring is recommended in the event of overdosage. In dogs, changes in the QT interval (slight prolongation of 10% to 20%) were observed at a suprapharmacologic dose of 4.5 mg/kg, which is about 68 times higher than the recommended human dose. In clinical trials of normal volunteers and patients, QT interval prolongation was observed with tolterodine immediate release at doses up to 8 mg (4 mg bid) and higher doses were not evaluated (see PRECAUTIONS , Patients with Congenital or Acquired QT Prolongation ).

HOW SUPPLIED Tolterodine Tartrate Tablets 1 mg are pale yellow, round, biconvex, film-coated tablets debossed with ‘'J'’ on one side and ‘'157’' on the other side. They are supplied as follows: Bottle of 60 tablets NDC 31722-805-60 Bottle of 500 tablets NDC 31722-805-05 Blister card of 10 unit dose tablets (ALU-ALU) NDC 31722-805-31 Blister pack of 100 (10x10) unit dose tablets (ALU-ALU) NDC 31722-805-01 Blister card of 10 unit dose tablets (PVC-PVDC) NDC 31722-805-32 Blister pack of 100 (10x10) unit dose tablets (PVC-PVDC) NDC 31722-805-02 Tolterodine Tartrate Tablets 2 mg are white, round, biconvex, film-coated tablets debossed with ‘'J’' on one side and ‘'158'’ on the other side. They are supplied as follows: Bottle of 60 tablets NDC 31722-806-60 Bottle of 500 tablets NDC 31722-806-05 Blister card of 10 unit dose tablets (ALU-ALU) NDC 31722-806-31 Blister pack of 100 (10x10) unit dose tablets (ALU-ALU) NDC 31722-806-01 Blister card of 10 unit dose tablets (PVC-PVDC) NDC 31722-806-32 Blister pack of 100 (10x10) unit dose tablets (PVC-PVDC) NDC 31722-806-02 Store at 20°C to 25°C (68°F to 77°F) [see USP Controlled Room Temperature]. Manufactured for: Camber Pharmaceuticals, Inc. Piscataway, NJ 08854 By: Annora Pharma Pvt. Ltd. Sangareddy - 502313, Telangana, India. Revised: 05/2021 camber