URAPLEX 20MG COATED TABLETS
Active substance(s): TROSPIUM CHLORIDE
NAME OF THE MEDICINAL PRODUCT
Uraplex 20mg Coated Tablets
QUALITATIVE AND QUANTITATIVE COMPOSITION
The active ingredient is trospium chloride. Each coated tablet contains 20 mg
Excipients: includes 7 mg lactose monohydrate, 39 mg sucrose and 19 mg
wheat starch per coated tablet.
For a full list of excipients, see section 6.1.
Brownish-yellow, glossy coated, biconvex tablets.
Symptomatic treatment of urge incontinence and/or increased urinary frequency and
urgency as may occur in patients with overactive bladder (e.g. idiopathic or
neurologic detrusor overactivity).
Posology and method of administration
For oral administration.
One coated tablet twice daily (equivalent to 40 mg of trospium chloride per
In patients with severe renal impairment (creatinine clearance between 10 and
30 mL/min/1.73 m2) the recommended dosage is: One coated tablet per day or
every second day (equivalent to 20 mg of trospium chloride per day or every
The coated tablet should be swallowed whole with a glass of water before meals on
an empty stomach.
The need for continued treatment should be reassessed at regular intervals of
Since no data are available, the use in children under 12 years of age is
Trospium chloride is contraindicated in patients with urinary retention, severe gastrointestinal condition (including toxic megacolon), myasthenia gravis, narrow-angle
glaucoma, and tachyarrhythmia.
Trospium chloride is also contraindicated in patients who have demonstrated
hypersensitivity to the active substance or to any of the excipients.
Special warnings and precautions for use
Trospium chloride should be used with caution by patients:
- with obstructive conditions of the gastrointestinal tract such as pyloric
- with obstruction of the urinary flow with the risk of formation of urinary
- with autonomic neuropathy
- with hiatus hernia associated with reflux oesophagitis
- in whom fast heart rates are undesirable e.g. those with hyperthyroidism,
coronary artery disease and congestive heart failure.
As there are no data in patients with severe hepatic impairment, treatment of these
patients with trospium chloride is not recommended. In patients with mild to
moderate liver impairment caution should be exercised.
Trospium chloride is mainly eliminated by renal excretion. Marked elevations
in the plasma levels have been observed in patients with severe renal
impairment. Therefore in this population and also in patients with mild to
moderate renal impairment caution should be exercised (see section 4.2).
Before commencing therapy organic causes of urinary frequency, urgency, and
urge incontinence, such as heart diseases, diseases of the kidneys, polydipsia,
or infections, or tumours of urinary organs should be excluded.
Uraplex 20mg contain lactose-monohydrate, sucrose and wheat starch.
Patients with rare hereditary problems of galactose intolerance, the Lapp
lactase deficiency or glucose-galactose malabsorption should not take this
Patients with rare hereditary problems of fructose intolerance or sucraseisomaltase insufficiency should not take this medicine.
Patients with wheat allergy (different from coeliac disease) should not take
this medicine. Apart from that, trospium chloride is suitable for people with
Interaction with other medicinal products and other forms of interaction
The following potential pharmacodynamic interactions may occur: Potentiation of the
effect of drugs with anticholinergic action (such as amantadine, tricyclic
antidepressants), enhancement of the tachycardic action of ß-sympathomimetics,
decrease in efficacy of pro-kinetic agents (e.g. metoclopramide).
Since trospium chloride may influence gastro-intestinal motility and secretion,
the possibility cannot be excluded that the absorption of other concurrently
administered drugs may be altered.
An inhibition of the absorption of trospium chloride with drugs like guar,
colestyramine and colestipol cannot be excluded. Therefore the simultaneous
administration of these drugs with trospium chloride is not recommended.
Metabolic interactions of trospium chloride have been investigated in vitro on
cytochrome P450 enzymes involved in drug metabolism (P450 1A2, 2A6,
2C9, 2C19, 2D6, 2E1, 3A4). No influence on their metabolic activities was
observed. Since trospium chloride is metabolised only to a low extent and
since ester hydrolysis is the only relevant metabolic pathway, no metabolic
interactions are expected.
Though trospium chloride was shown not to affect pharmacokinetics of
digoxin, an interaction with other active substances eliminated by active
tubular secretion cannot be excluded.
Pregnancy and lactation
Animal studies do not indicate direct or indirect harmful effects with respect to
pregnancy, embryonal/foetal development, parturition or postnatal development (see
section 5.3). In rats, placental transfer and passage into the maternal milk of trospium
For Uraplex 20 mg no clinical data on exposed pregnancies are available
Caution should be exercised when prescribing to pregnant or breastfeeding women.
Effects on ability to drive and use machines
Principally, disorders of accommodation can lower the ability to actively participate
in road traffic and to use machines.
However, examinations of parameters characterising the ability to participate
in road traffic (visual orientation, general ability to react, reaction under stress,
concentration and motor coordination) have not revealed any effects of
Undesirable effects observed with trospium chloride such as dry mouth, dyspepsia
and constipation mainly reflect the typical anticholinergic properties of the active
In Phase-III clinical studies, dry mouth was very common and occurred in
approximately 18% of patients treated with trospium chloride and in
approximately 6% treated with placebo (total of 1931 patients of which 911
The following table lists possibly related drug reactions reported for patients treated
with Uraplex 20 mg:
al disorders mouth
(SJS) / Toxic
*These adverse effects occurred mostly in elderly patients and can be facilitated by
neurological diseases and/or concomitant intake of other anticholinergic drugs (see
After the administration of a maximum single dose of 360 mg trospium chloride to
healthy volunteers, dryness of the mouth, tachycardia and disorders of micturition
were observed to an increased extent. No manifestations of severe overdosage or
intoxication in humans have been reported to date. Increased anticholinergic
symptoms are to be expected as signs of intoxication.
In the case of intoxication the following measures should be taken:
gastric lavage and reduction of absorption (e.g. activated charcoal)
local administration of pilocarpine to glaucoma patients
catheterisation in patients with urinary retention
treatment with a parasympathomimetic agent (e.g. neostigmine) in the
case of severe symptoms
administration of beta blockers in the case of insufficient response, pronounced
tachycardia and/or circulatory instability (e.g. initially 1 mg propranolol
intravenously along with monitoring of ECG and blood pressure).
Pharmacotherapeutic group: Urinary Antispasmodic, ATC code G04BD09
Trospium chloride is a quaternary derivative of nortropane and therefore
belongs to the class of parasympatholytic or anticholinergic drugs, as it
competes concentration-dependently with acetylcholine, the body's
endogenous transmitter at postsynaptic, parasympathic binding sites.
Trospium chloride binds with high affinity to muscarinic receptors of the so
called M1-, M2- and M3- subtypes and demonstrates negligible affinity to
Consequently, the anticholinergic effect of trospium chloride exerts a relaxing
action on smooth muscle tissue and organ functions mediated by muscarinic
receptors. Both in preclinical as well as in clinical experiments, trospium
chloride diminishes the contractile tone of smooth muscle in the
gastrointestinal and genito-urinary tract.
Furthermore, it can inhibit the secretion of bronchial mucus, saliva, sweat and
the occular accommodation. No effects on the central nervous system have so
far been observed.
In two specific safety studies in healthy volunteers trospium chloride has been
proven not to affect cardiac repolarisation, but has been shown to have a
consistent and dose dependant heart rate accelerating effect.
A long term clinical trial with trospium chloride 20 mg bid found an increase
of QT> 60 ms in 1.5% (3/197) of included patients. The clinical relevance of
these findings has not been established.
Routine safety monitoring in two other placebo-controlled clinical trials of
three months duration does not support such an influence of trospium chloride:
In the first study an increase of QTcF >= 60 msec was seen in 4/258 (1.6%) in
trospium-treated patients vs. 9/256 (3.5%) in placebo-treated patients.
Corresponding figures in the second trial were 8/326 (2.5%) in trospiumtreated patients vs. 8/325 (2.5%) in placebo-treated patients.
After oral administration of trospium chloride maximum plasma levels are reached at
4-6 hours. Following a single dose of 20 mg the maximum plasma level is about
4 ng/mL. Within the tested interval, 20 to 60 mg as a single dose, the plasma levels
are proportional to the administered dose. The absolute bioavailability of a single oral
dose of 20 mg of trospium chloride (1 coated tablet Uraplex 20 mg) is 9.6 ± 4.5%
(mean value ± standard deviation). At steady state the intraindividual variability is
16%, the interindividual variability is 36%.
Simultaneous intake of food, especially high fat diets, reduces the
bioavailability of trospium chloride. After a high-fat meal mean Cmax and
AUC are reduced to 15-20% of the values in the fasted state.
Trospium chloride exhibits diurnal variability in exposure with a decrease of
both Cmax and AUC for evening relative to morning doses.
Most of the systemically available trospium chloride is excreted unchanged by
the kidneys, though a small portion (10% of the renal excretion) appears in the
urine as the spiroalcohol, a metabolite formed by ester hydrolysis. The
terminal elimination half-life is in the range of 10-20 hours. No accumulation
occurs. The plasma protein binding is 50-80%.
Pharmacokinetic data in elderly patients suggests no major differences. There
are also no gender differences.
In a study in patients with severe renal impairment (creatinine clearance 832 mL/min) mean AUC was 4-fold higher, Cmax was 2-fold higher and the
mean half-life was prolonged 2-fold compared with healthy subjects.
Pharmacokinetic results of a study with mildly and moderately hepatically impaired
patients do not suggest a need for dose adjustment in patients with hepatic
impairment, and are consistent with the limited role of hepatic metabolism in the
elimination of trospium chloride.
The Blood Brain Barrier permeability of trospium chloride is virtually absent
due to its chemical properties (low lipophilicity as a quaternary amine).
Preclinical safety data
Preclinical data reveal no special hazard to humans based on conventional studies of
safety pharmacology, repeated dose toxicity, genotoxicity, carcinogenicity, and
toxicity to reproduction.
Placental transfer and passage of trospium chloride into the maternal milk occurs in
List of excipients
Tablet core: Wheat starch
Povidone (K 29-32)
Silica colloidal anhydrous
Tablet coat: Sucrose
Silica colloidal anhydrous
Calcium carbonate E 170
Titanium dioxide E 171
Iron oxide hydrate yellow E 172
Note for diabetics: 1 coated tablet corresponds to 0.06 g carbohydrate (equivalent to
0.005 bread units
Special precautions for storage
This medicinal product does not require any special storage conditions.
Nature and contents of container
PVC foiled aluminium blister
Pack sizes approved: 2, 20, 28, 30, 40, 50, 56, 60, 90, 100, 120, 150, 200, 500, 600,
1000, 1200, 2000
Not all pack sizes may be marketed.
Special precautions for disposal and other handling
No special requirements.
Any unused product or waste material should be disposed of in accordance with local
MARKETING AUTHORISATION HOLDER
Meda Pharmaceuticals Ltd
MARKETING AUTHORISATION NUMBER(S)
DATE OF FIRST AUTHORISATION/RENEWAL OF THE
DATE OF REVISION OF THE TEXT
Source: Medicines and Healthcare Products Regulatory Agency
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