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Clinical Trials Experience
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 of SANCTURA® was evaluated in controlled clinical trials in a total of 2975 patients, who were treated with SANCTURA® (N=1673), placebo (N=1056) or active control medications (N=246). Of this total, 1181 patients participated in two, 12-week, U.S., efficacy and safety studies and a 9-month open-label extension. Of this total, 591 patients received SANCTURA® 20 mg twice daily. In all controlled trials combined, 232 and 208 patients received treatment with SANCTURA® for at least 24 and 52 weeks, respectively.
In all placebo-controlled trials combined, the incidence of serious adverse events was 2.9% among patients receiving SANCTURA® 20 mg twice daily and 1.5% among patients receiving placebo. Table 1 lists adverse reactions from the combined 12-week U.S. safety and efficacy trials were reported by at least 1% of patients, and were reported more frequently in the SANCTURA® group than in the placebo group.
The two most common adverse reactions reported by patients receiving SANCTURA® 20 mg twice daily were dry mouth and constipation. The single most frequently reported adverse reaction for SANCTURA®, dry mouth, occurred in 20.1% of SANCTURA® treated patients and 5.8% of patients receiving placebo. In the two U.S. studies, dry mouth led to discontinuation in 1.9% of patients treated with SANCTURA® 20 mg twice daily. For the patients who reported dry mouth, most had their first occurrence of the event within the first month of treatment.
Table 1: Incidence (%) of adverse reactions with SANCTURA®,
reported in greater than or equal to 1% of all patients treated with SANCTURA® and more frequent with SANCTURA® (20 mg twice daily) than
placebo in Studies 1 and 2 combined
|SANCTURA® 20 mg twice daily
|Dry mouth||34 ( 5.8)||119 (20.1)|
|Constipation||27 (4.6)||57 (9.6)|
|Abdominal pain upper||7 (1.2)||9 (1.5)|
|Constipation aggravated||5 (0.8)||8 (1.4)|
|Dyspepsia||2 (0.3)||7 (1.2)|
|Flatulence||5 (0.8)||7 (1.2)|
|Nervous System Disorders|
|Headache||12 (2.0)||25 (4.2)|
|Fatigue||8 (1.4)||11 (1.9)|
|Renal and Urinary Disorders|
|Urinary retention||2 (0.3)||7 (1.2)|
|Dry eyes||2 (0.3)||7 (1.2)|
Other adverse reactions from the U.S., placebo-controlled trials , occurring in greater than or equal to 0.5% and less than 1.0% of SANCTURA® treated patients, and more common with SANCTURA® than placebo are: tachycardia , vision blurred, abdominal distension, vomiting, dysgeusia, dry throat, and dry skin.
During controlled clinical studies, one adverse reaction of angioneurotic edema was reported.
The following adverse reactions have been identified during post-approval use of trospium chloride. Because these 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.
Gastrointestinal – gastritis; Cardiovascular – palpitations, supraventricular tachycardia, chest pain, syncope, “hypertensive crisis”; Immunological – Stevens-Johnson syndrome, anaphylactic reaction, angioedema; Nervous System – dizziness, confusion, vision abnormal, hallucinations, somnolence and delirium; Musculoskeletal – rhabdomyolysis; General – rash.
Read the Sanctura (trospium chloride tablets) Side Effects Center for a complete guide to possible side effects
Concomitant use of SANCTURA® and digoxin did not affect the pharmacokinetics of either drug [see CLINICAL PHARMACOLOGY].
Drugs Eliminated by Active Tubular Secretion
Although demonstrated in a drug-drug interaction study not to affect the pharmacokinetics of digoxin, SANCTURA® has the potential for pharmacokinetic interactions with other drugs that are eliminated by active tubular secretion (e.g., procainamide, pancuronium, morphine, vancomycin, and tenofovir). Coadministration of SANCTURA® with these drugs may increase the serum concentration of SANCTURA® and/or the coadministered drug due to competition for this elimination pathway. Careful patient monitoring is recommended in patients receiving such drugs [see CLINICAL PHARMACOLOGY].
The concomitant use of SANCTURA® with other antimuscarinic agents that produce dry mouth, constipation, and other anticholinergic pharmacological effects may increase the frequency and/or severity of such effects. SANCTURA® may potentially alter the absorption of some concomitantly administered drugs due to anticholinergic effects on gastrointestinal motility.
Co-administration of 500 mg metformin immediate release tablets twice daily with SANCTURA XR® (trospium chloride 60 mg extended release) reduced the steady-state systemic exposure of trospium by approximately 29% for mean AUC0-24 and by 34% for mean Cmax [see CLINICAL PHARMACOLOGY].
Read the Sanctura Drug Interactions Center for a complete guide to possible interactions
Last reviewed on RxList: 8/6/2012
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