WARNINGS
Included as part of the PRECAUTIONS section.
PRECAUTIONS
Risk of Urinary Retention
SANCTURA® should be administered with caution to
patients with clinically significant bladder outflow obstruction because of the
risk of urinary retention [see CONTRAINDICATIONS].
Angioedema
Angioedema of the face, lips, tongue, and/or larynx has been
reported with trospium chloride, the active ingredient in SANCTURA®.
In one case, angioedema occurred after the first dose of trospium chloride.
Angioedema associated with upper airway swelling may be life threatening. If involvement
of the tongue, hypopharynx, or larynx occurs, SANCTURA® should be
promptly discontinued and appropriate therapy and/or measures necessary to
ensure a patent airway should be promptly provided.
Decreased Gastrointestinal Motility
SANCTURA® should be administered with caution to
patients with gastrointestinal obstructive disorders because of the risk of
gastric retention [see CONTRAINDICATIONS]. SANCTURA®, like
other antimuscarinic agents, may decrease gastrointestinal motility and should
be used with caution in patients with conditions such as ulcerative colitis,
intestinal atony and myasthenia gravis.
Controlled Narrow-angle Glaucoma
In patients being treated for narrow-angle glaucoma,
SANCTURA® should only be used if the potential benefits outweigh the
risks and in that circumstance only with careful monitoring [see CONTRAINDICATIONS].
Central Nervous System Effects
SANCTURA® is associated with anticholinergic
central nervous system (CNS) effects [see ADVERSE REACTIONS]. A variety
of CNS anticholinergic effects have been reported, including dizziness,
confusion, hallucinations and somnolence. 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 they know how SANCTURA® affects them. If a patient experiences
anticholinergic CNS effects, dose reduction or drug discontinuation should be
considered.
Anticholinergic Adverse Reactions in Patients with Moderate
Renal Impairment
Trospium is substantially excreted by the kidney. The
effects of moderate renal impairment on systemic exposure are not known but
systemic exposure is likely increased. Therefore, anticholinergic adverse
reactions (including dry mouth, constipation, dyspepsia, urinary tract
infection, and urinary retention) are expected to be greater in patients with
moderate renal impairment [see DOSAGE AND ADMINISTRATION, and Use in
Specific Populations].
Patient Counseling Information
“See FDA-approved Patient
Labeling (PATIENT INFORMATION)”
Angioedema
Patients should be informed that
trospium chloride, the active ingredient in SANCTURA®, may produce
angioedema which could result in life-threatening airway obstruction. Patients
should be advised to promptly discontinue SANCTURA® and seek
immediate medical attention if they experience edema of the tongue, edema of
the laryngopharynx, or difficulty breathing.
When Not to Use
Prior to treatment, patients
should fully understand the risks and benefits of SANCTURA®. In
particular, patients should be informed not to take SANCTURA® tablets
if they:
- have urinary retention;
- gastric retention;
- uncontrolled narrow-angle
glaucoma;
- are allergic to any component of SANCTURA®.
Administration
Patients should be instructed
regarding the recommended dosing and administration of SANCTURA®:
- Take one SANCTURA® tablet twice daily
with water.
- Take SANCTURA® on an empty
stomach or at least 1 hour before a meal.
Adverse Reactions
Patients should be informed that
the most common side effects with SANCTURA® are dry mouth and
constipation and that other less common side effects include trouble emptying
the bladder, blurred vision, and heat prostration. Because anticholinergics,
such as SANCTURA®, may produce dizziness or blurred vision, patients
should be advised to exercise caution in decisions to engage in potentially
dangerous activities until the drug's effects have been determined. Patients
should be informed that alcohol may enhance the drowsiness caused by
anticholinergic agents.
Nonclinical Toxicology
Carcinogenesis, Mutagenesis, Impairment of Fertility
Carcinogenesis
Carcinogenicity studies with trospium chloride were
conducted in mice and rats for 78 weeks and 104 weeks, respectively, at
maximally tolerated doses. No evidence of a carcinogenic effect was found in
either mice or rats administered up to 200 mg/kg/day, approximately 9 times the
expected clinical exposure levels at the maximum recommended human dose (MRHD)
of 40 mg.
Mutagenesis
Trospium chloride was not mutagenic nor genotoxic in tests in
vitro in bacteria (Ames test) and mammalian cells (L5178Y mouse lymphoma and
CHO cells) or in vivo in the rat micronucleus test.
Impairment of Fertility
No evidence of impaired fertility was observed in rats
administered doses up to 200 mg/kg/day (about 16 times the expected clinical
exposure at the MRHD, based on AUC).
Use In Specific Populations
Pregnancy
Teratogenic Effects
Pregnancy Category C: There are no adequate and
well-controlled studies of SANCTURA® in pregnant women. SANCTURA® 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 SANCTURA® treatment are encouraged to contact their
physician.
Risk Summary
Based on animal data, trospium chloride is predicted to have
a low probability of increased risk of adverse developmental outcomes, above
background risk. Adverse developmental findings were not observed to correlate
with dose in rats or in rabbits. No increased risk above background was
observed in rats and rabbits treated at an exposure approximately equivalent to
the maximal recommended human dose (MRHD) of 40 mg.
Animal Data
In a rat embryo/fetal development study, pregnant rats
received doses of trospium chloride up to 200 mg/kg/day, from implantation to
closure of the fetal hard palate, with maternal systemic exposures
corresponding to approximately nine times the exposure of women treated at the
MRHD of 40 mg, based on AUC. No malformations or fetal toxicity were observed.
The offspring of female rats exposed orally, pre-and
post-natally, to trospium chloride up to 200 mg/kg/day showed no increased
developmental toxicity over background in surviving pups. However, maternal
toxicity (death, irregular breathing, increased excitability) was observed at
200 mg/kg/day. A no-effect level for maternal and pup toxicity (survival to Day
4) was 20 mg/kg/day, an exposure approximately equivalent to the maximal
recommended human dose (MRHD) of 40 mg.
In a rabbit embryo/fetal development study, pregnant rabbits
received doses of trospium chloride up to 200 mg/kg/day, from implantation to
closure of the fetal hard palate. At 200 mg/kg/day, maternal systemic exposures
corresponded to approximately 16 times the exposure of women treated at the
MRHD of 40 mg, based on AUC. However, one fetus in each of the three treated
dose groups (0.3 to 16 times exposures at the MRHD) demonstrated multiple
malformations, including umbilical hernia and skeletal malformations. A maternal
no-effect level was set at 20 mg/kg/day, at an exposure approximately
equivalent to the maximal recommended human dose (MRHD) of 40 mg, due to
clinical signs (reduced feces, hunched posture, diarrhea) observed in a
pharmacokinetic study at 200 mg/kg/day.
Labor and Delivery
The effect of SANCTURA® tablets on labor and
delivery is unknown.
Nursing Mothers
Trospium chloride (2 mg/kg orally and 50 mcg/kg
intravenously) was excreted, to a limited extent (less than 1%), into the milk
of lactating rats (primarily as parent compound). It is not known whether this
drug is excreted in human milk. Because many drugs are excreted in human milk,
SANCTURA® should be used during lactation only if the potential
benefit justifies the potential risk to the newborn.
Pediatric Use
The safety and effectiveness of SANCTURA® in
pediatric patients have not been established.
Geriatric Use
Of the 591 patients with overactive bladder who received
treatment with SANCTURA® in the two U.S., placebo-controlled,
efficacy and safety studies, 249 patients (42%) were 65 years of age and older.
Eighty-eight SANCTURA® treated patients (15%) were greater than or
equal to 75 years of age.
In these 2 studies, the incidence of commonly reported
anticholinergic adverse reactions in patients treated with SANCTURA® (including
dry mouth, constipation, dyspepsia, urinary tract infection, and urinary
retention) was higher in patients 75 years of age and older as compared to
younger patients. This effect may be related to an enhanced sensitivity to
anticholinergic agents in this patient population [see CLINICAL PHARMACOLOGY].
Therefore, based upon tolerability, the dose frequency of SANCTURA® may
be reduced to 20 mg once daily in patients 75 years of age and older.
Renal Impairment
Severe renal impairment (creatinine clearance less than 30
mL/minute) significantly altered the disposition of SANCTURA®. A
4.2-fold and 1.8-fold increase in mean AUC(0-∞) and Cmax, respectively,
and the appearance of an additional elimination phase with a long half-life
(~33 hr) were detected in patients with severe renal impairment compared with
nearly age-matched subjects with creatinine clearance equal to or higher than
80 mL/min. The different pharmacokinetic behavior of SANCTURA® in
patients with severe renal impairment necessitates adjustment of dosage
frequency [see DOSAGE AND ADMINISTRATION]. The pharmacokinetics of
trospium have not been studied in patients with creatinine clearance ranging
from 30-80 mL/min.
Trospium is known to be substantially excreted by the
kidney, and the risk of adverse reactions may be greater in patients with
impaired renal function.
Hepatic Impairment
There is no information regarding the effect of severe
hepatic impairment on exposure to SANCTURA®. In a study of patients
with mild and with moderate hepatic impairment, given 40 mg of
immediate-release trospium chloride, mean Cmax increased 12% and 63%,
respectively, and mean AUC(0-∞) decreased 5% and 15%, respectively,
compared to healthy subjects. The clinical significance of these findings is
unknown. Caution should be used when administering SANCTURA® to
patients with moderate and severe hepatic impairment.