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Urotrim (ANTISPASMODIC)

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Urotrim (ANTISPASMODIC)

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Medically reviewed

Marina Burgos

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

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Overview of Urotrim (ANTISPASMODIC)

Quick Facts

Property Description
Active ingredient Solifenacin (as Solifenacin succinate)
Form Tablets, Oral suspension (liquid)
Pharmacological class Antimuscarinic agent, Genitourinary antispasmodic
Common use Management of overactive bladder symptoms
Origin Synthetic lipophilic tertiary amine

Classification and Composition

Urotrim is a prescription-only medication containing the active ingredient Solifenacin succinate (Solifenacin). This substance is structurally classified as a synthetic lipophilic tertiary amine and pharmacologically recognized as an antimuscarinic agent. This classification identifies its function as an inhibitor that modulates specific nerve signals in smooth muscle tissue. The drug is broadly recognized as a genitourinary antispasmodic, a therapeutic designation that reflects its targeted action on the urinary system.

The product is a single-entity product intended for oral administration, available as both tablets and an oral suspension (liquid). The provision of an oral suspension is a notable feature, supporting use in target populations such as pediatric patients (children ge 2 years) requiring treatment for specific bladder conditions. Pharmacological studies support Solifenacin's high selectivity for muscarinic M3 receptors, which are integral to bladder function.

Therapeutic Type and Mechanism Principle

The general purpose of Urotrim is to improve the management of bladder symptoms by directly addressing the involuntary spasms of the bladder muscle. As an antimuscarinic agent, Solifenacin works by blocking specific nerve signals mediated by acetylcholine that normally stimulate the detrusor muscle to contract. By interrupting this communication, the medication permits the relaxation of the muscle, thereby mitigating its excessive hyperactivity.

This physiological relaxation is the key mechanism that increases the functional capacity of the bladder. Clinically, this mechanism is integral to helping restore more appropriate bladder control, serving the general therapeutic goal of reducing the distressing sudden urges and frequent need to urinate.

Regulatory References

  1. Solifenacin: MedlinePlus Drug Information
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What side effects are possible with Urotrim (ANTISPASMODIC)?

Possible Side Effects and Safety Information

The official safety profile for Urotrim (Solifenacin succinate) is primarily characterized by anticipated antimuscarinic effects documented across multiple system-organ classes, as classified by regulatory authorities like the EMA and FDA.

Frequency-Classified Adverse Reactions

Adverse reactions are grouped by the likelihood of their occurrence based on regulatory classifications:

Classification Common Examples
Common Dry mouth, Constipation, Blurred vision, Nausea, Abdominal pain
Uncommon Urinary Tract Infection (UTI), Vomiting, Somnolence (drowsiness), Headache, Fatigue
Rare Urinary retention, Fecal impaction

These effects are generally classified under Gastrointestinal Disorders, Eye Disorders, and Renal and Urinary Disorders.

Serious Adverse Reactions and Safety Constraints

The regulatory documentation highlights specific serious adverse reactions that are potentially life-threatening. These include Angioedema (rapid, severe swelling of the face, lips, and tongue) and Anaphylactic reactions. Furthermore, significant complications like Urinary retention and Fecal impaction are officially noted, as are potentially severe Central Nervous System (CNS) effects such as confusion and hallucinations.

Official safety information also outlines specific population-based constraints. Use is contraindicated in patients with severe hepatic impairment (Child-Pugh C) and conditions such as gastric retention, urinary retention, and uncontrolled narrow-angle glaucoma. Increased systemic exposure in patients with severe renal impairment or moderate hepatic impairment necessitates specific considerations as documented in the prescribing information.

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Overdose and Emergency Response

Overdose and When to Seek Help

An overdose of Solifenacin is officially defined by the manifestation of severe, exaggerated anticholinergic effects, according to authoritative regulatory documentation. The documented clinical presentation includes peripheral symptoms such as mydriasis (dilated pupils), profound dry mouth, tachycardia (rapid heart rate), and urinary retention. Overdose also carries the potential for severe central nervous system effects, including episodes of severe excitability and pronounced hallucinations.

The official labeling identifies potential life-threatening outcomes that necessitate intensive management. These severe effects involve cardiovascular risks, notably the development of a prolonged QT interval and Ventricular Tachycardia, which, alongside central symptoms, can lead to respiratory failure.

In the event of a suspected overdose, regulatory guidance mandates that patients seek immediate medical attention or contact emergency services. Emergency help must be summoned without delay if the affected individual experiences severe symptoms, such as collapse, a seizure, inability to breathe, or loss of consciousness.

Management for an overdose situation is centered on symptomatic and supportive treatment, as regulatory agencies state that no specific antidote is known. Officially described supportive procedures include the use of activated charcoal or gastric lavage, alongside continuous vital sign monitoring and necessary ECG monitoring to manage the documented cardiac risks.

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Therapeutic Uses of Urotrim (ANTISPASMODIC)

This medication is primarily used to provide symptomatic relief for conditions defined by symptoms related to organ-specific functional stress, such as Overactive Bladder (OAB) syndrome and Neurogenic Detrusor Overactivity (NDO). It helps address the core symptom cluster of excessive urinary urgency, urinary frequency (day and night), and associated urge urinary incontinence (involuntary leakage). Providing relief from these challenging manifestations contributes to easing the overall symptom burden. The therapeutic support is also relevant for specialized groups, including pediatric patients (aged ge 2 years) diagnosed with NDO and adults with chronic symptoms secondary to neurological conditions.

“Managing symptoms like nocturia contributes to improved comfort during symptomatic periods, which supports general well-being.”

This supportive relief may assist with maintaining functional stability during episodes of heightened discomfort.


Quick Facts: Therapeutic Domain

Property Description
Primary Indication Overactive Bladder (OAB) syndrome
Symptom Relief Urinary Urgency, Frequency, Incontinence, Nocturia
Contextual Use Neurogenic Detrusor Overactivity in children ge 2 years

Regulatory References

  1. NIH MedlinePlus overview of Solifenacin
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Eligibility and Restrictions for Use

Urotrim (Solifenacin) eligibility is strictly defined by regulatory authorities based on age, co-existing health conditions, and physiological status.

Populations Not Eligible (Contraindications)

This medicine is formally contraindicated and must not be used in individuals with certain severe, pre-existing conditions, including urinary retention, gastric retention, uncontrolled narrow-angle glaucoma, and myasthenia gravis. Use is also prohibited for patients with severe gastro-intestinal conditions like toxic megacolon and those with a known hypersensitivity to solifenacin. Additionally, the medicine is contraindicated in patients with severe hepatic impairment (Child-Pugh C).

Restricted and Conditional Use

Official labeling mandates caution and a lower maximum dose for patients with severe renal impairment ( CrCl le 30 mL/min) or moderate hepatic impairment (Child-Pugh B). Use in these patients is absolutely prohibited if they are also taking a strong CYP3A4 inhibitor. Use is also not recommended for those with a high risk of QT prolongation or conditions associated with decreased gastrointestinal motility.

Age and Reproductive Status

Use is approved for adults for Overactive Bladder (OAB) and for pediatric patients ge 2 years for Neurogenic Detrusor Overactivity (NDO). Safety and efficacy for the OAB indication have not been established in children and adolescents < 18 years. The medicine should be avoided during breastfeeding, and its use during pregnancy is conditional upon official benefit-risk assessment.

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What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents define the interaction profile of Urotrim (Solifenacin) based on its metabolism and pharmacodynamic effects. The medicine is primarily cleared as a substrate of the hepatic enzyme Cytochrome P450 3A4 (CYP3A4).

Documented Interaction Patterns

Co-administration with potent CYP3A4 inhibitors (such as Ketoconazole) results in a clinically significant increase in Solifenacin exposure (increased AUC and C max). This combination is officially designated as contraindicated in patients with severe renal impairment or moderate hepatic impairment due to the enhanced risk of exposure [DailyMed/FDA]. Concomitant use with other CYP3A4 inducers (e.g., Rifampicin, St. John's Wort) may also alter drug concentrations.

Pharmacodynamic interactions are documented with agents that share similar effects. Co-administration with other anticholinergic agents may result in additive effects, and the drug may reduce the effect of medicines that stimulate gastrointestinal motility, such as Metoclopramide. An increased risk of QT interval prolongation is noted when combined with other known QT-prolonging medicines [EMA SmPC]. No significant interaction is documented with food, Warfarin, Digoxin, or combined oral contraceptives.

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Mechanism of Action

Targeted Blockade of Muscarinic M3 Receptors

Urotrim's active component, Solifenacin, acts as a competitive antagonist, primarily targeting muscarinic M3 receptors ( M3) on the detrusor smooth muscle. M3 receptor activation is the principal mechanism by which the parasympathetic nerve signal stimulates muscle contraction. By occupying these receptors, the drug blocks the excitatory signal transmitted by the neurotransmitter acetylcholine (ACh).


Dampening the Smooth Muscle Contraction Cascade

Blocking the M3 receptor prevents the associated G q signaling cascade, which is responsible for releasing the intracellular calcium ( Ca^2+) stores essential for muscle fiber shortening. This suppression of cellular contractility reduces the involuntary kinetic activity of the detrusor muscle during the urine storage phase. The blockade of the M3-mediated signal is the underlying mechanism that reduces detrusor muscle contraction.


Resultant Physiological Compliance

The sustained relaxation during the filling phase allows the bladder wall to distend to a greater volume at a lower internal pressure. This modification of detrusor tone and contractility is the physiological change produced by the mechanism. The outcome of the anticholinergic mechanism is the resultant increase in the functional volume that the bladder can tolerate.


Modulation of Visceral Sensory Signaling

Antagonism of muscarinic receptors on afferent (sensory) nerve fibers within the bladder wall also occurs. This secondary mechanism modulates the transmission of sensory signals related to bladder stretch and pressure, impacting regulatory reflex activity.

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Dosage and Administration Information

How to Use Urotrim (Solifenacin) — Official Administration Guidelines

Urotrim (solifenacin succinate) is administered orally and is available in two formulations: immediate-release tablets (5 mg and 10 mg strengths) and an oral suspension (liquid). The medication is taken consistently once daily. Tablets should be swallowed whole with liquid and must not be crushed or chewed to ensure proper release of the active ingredient, and may be taken with or without food.


Standard Dosing and Administration

The standard adult regimen for oral tablets typically begins with a starting dose of 5 mg once daily. This may be subsequently adjusted, based on how well the initial dose is tolerated, up to a maximum daily dose of 10 mg. For pediatric patients (aged ge 2 years) requiring treatment for specific bladder conditions, the oral suspension formulation is used, and the dose is determined according to the patient's weight.


Procedural Constraints and Adjustments

Established guidelines identify necessary dosage restrictions for adults with impaired kidney or liver function. For patients with severe renal impairment or moderate hepatic impairment, the maximum daily dose is restricted to 5 mg. A maximum dose of 5 mg daily is also required when the medication is taken concurrently with a potent inhibitor of the CYP3A4 enzyme, such as ketoconazole. In the event a dose of the liquid suspension is missed, it should be taken as soon as remembered, unless more than 12 hours have passed, in which case the missed dose is skipped. No routine dose adjustment is specified for older adults.

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Recent Clinical Evidence

Research Evidence / Overview of Studies for Urotrim (Solifenacin)

The following summary describes the nature and structure of the clinical research that has been conducted for Urotrim, including the types of studies used, the patient groups examined, and the outcomes that researchers monitored. This information is based on official regulatory evidence and peer-reviewed scientific sources.


Evidence for Use in Overactive Bladder (OAB) Syndrome

The primary evidence for OAB syndrome—a condition characterized by fluctuating and episodic manifestations—is derived from research structures including pivotal randomized, double-blind, placebo-controlled trials (RCTs). These trials are a core component of the evidence base and are supported by systematic reviews and meta-analyses.

Study teams used objective bladder diaries to monitor key outcomes related to daily functioning, such as the number of micturitions per day and the frequency of urgency and urge urinary incontinence episodes. Research also explored patient-reported experiences through questionnaires designed to monitor perceived discomfort and health-related quality of life. The findings describe patterns observed in the studies related to changes measured when compared to placebo.


Evidence for Use in Neurogenic Detrusor Overactivity (NDO)

Research exploring Neurogenic Detrusor Overactivity (NDO) in the pediatric population (children and adolescents) was conducted in specific Phase 3 studies. This research examined temporary physiological imbalances in patients with NDO. The main research focus was on key urodynamic parameters, which are objective measurements of bladder function. These parameters include the Maximum Cystometric Capacity (MCC) and bladder wall compliance.

Studies reported patterns observed in the measured changes in MCC and bladder compliance when compared to the baseline values in the observed pediatric population. Research provides insight into the short-term changes measured during periods of heightened symptom activity.


Evidence Quality and Research Gaps

The structure and certainty of the evidence base varies across the studied indications. The evidence for OAB is characterized by a High level of research structure, reflecting the consistency and design strength of multiple randomized, placebo-controlled trials. However, a key limitation is that follow-up durations were limited to the short-term trial period.

The evidence for NDO is generally categorized as Moderate. The evidence includes studies that rely on measuring surrogate endpoints (urodynamic parameters) for clinical changes. Furthermore, the evidence base contains a limited number of high-quality randomized controlled trials focused on this specialized pediatric population. In both indications, comparative evidence against other existing therapies is lacking in certain contexts, and long-term effects are not fully established by the core regulatory trials.

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Frequently Asked Questions (FAQ)

Common questions about Urotrim (ANTISPASMODIC) (FAQ)

Q: How is Urotrim different from an ordinary painkiller or muscle relaxer?

A: Urotrim belongs to a specific class called antimuscarinic agents. Official documents describe that it works by blocking nerve signals from the neurotransmitter acetylcholine, which normally causes the involuntary detrusor muscle in the bladder wall to contract. This mechanism is different from that of general painkillers or skeletal muscle relaxers, as its action is specifically targeted at controlling the bladder’s involuntary spasms.

Q: Does Urotrim only treat bladder urgency or can it help with other spasms?

A: According to the official regulatory indications, Urotrim is approved for the treatment of symptoms related to overactive bladder (OAB), such as urgency, frequency, and urge urinary incontinence. It is also indicated for neurogenic detrusor overactivity (NDO) in specific pediatric populations. The primary evidence base supporting its use is focused on these genitourinary conditions.

Q: Are there any reported long-term side effects associated with Urotrim?

A: The main clinical studies used to support the approval of Urotrim were conducted over limited, short-term follow-up periods. Regulatory summaries note that the full range of effects and risks associated with use over many years are not completely established by the primary evidence base. Monitoring by a healthcare professional is often part of the established procedure for long-term use.

Q: Is Urotrim meant to be taken for a short period or long-term?

A: Official patient information indicates that Urotrim is generally used as a long-term maintenance therapy to manage chronic bladder symptoms. Official patient information describes that continued use is subject to regular review by a healthcare professional, typically every 6 to 12 months, to assess the ongoing need for the medicine.

Q: How soon will I notice an improvement in my urinary urgency after starting Urotrim?

A: Studies on the drug’s effectiveness show that the medicine begins its action of relaxing the bladder muscle within 3 to 8 hours of the first dose. However, the complete therapeutic benefit, including a noticeable improvement in symptoms like urgency and frequency, is generally reached after 4 to 6 weeks of taking the medicine consistently.

Q: Can Urotrim interact with supplements or herbal products?

A: According to drug interaction documents, Urotrim is metabolized by a liver enzyme called CYP3A4. Co-administering Urotrim with potent CYP3A4 inducers, which includes certain herbal products such as St. John's Wort, may change the concentration of the drug in the body. This information relates to the general risk profile, and information regarding all medicines and supplements is necessary for a healthcare professional to assess potential risks.

Q: Is Urotrim appropriate for use in older adults or the elderly?

A: Official information about the drug's action in the body notes that the concentration of Urotrim can be up to 25% higher in older adults (aged 65–80) compared to younger adults. Furthermore, the drug can cause Central Nervous System (CNS) effects like somnolence (drowsiness) or confusion. Therefore, use in the elderly population is described in regulatory documents as requiring careful consideration.

Q: How can a patient check the identity or ingredients of their Urotrim medication?

A: Regulatory labeling for the product includes a physical description to help verify the medicine. For instance, the 5 mg tablets are typically described as yellow and the 10 mg tablets as pink, both with specific manufacturer-assigned markings on the surface. These descriptions are part of the official product information provided in the pharmaceutical form section.

Q: Is it possible for Urotrim to affect mood or mental state?

A: Regulatory warnings note that Solifenacin may be associated with Central Nervous System (CNS) effects. These effects include somnolence (drowsiness) and, in rare instances, confusion or hallucinations. The safety profile indicates that patients may be affected by these potential changes to mental state as outlined in the safety documents.

Q: What happens if Urotrim treatment is stopped unexpectedly?

A: Official patient information advises that if you are considering stopping the medicine, you should consult with a healthcare professional first. This is because abruptly discontinuing the drug may cause the original symptoms, such as urgency and frequency, to return. Official information states that any decision to stop treatment should be made with professional guidance.

Q: Does Urotrim affect a person's ability to drive or operate machinery?

A: Regulatory safety documents contain specific warnings regarding activities that require alertness. Due to the potential for drowsiness and blurred vision, activities requiring alertness should be avoided until an individual knows how the medicine affects them. This warning is due to side effects such as somnolence and fatigue listed in the safety profile.

Q: Is Urotrim known to interact with common over-the-counter pain relievers?

A: Certain regulatory interaction reports indicate a potential for interaction between Solifenacin and some classes of medication, including non-steroidal anti-inflammatory drugs (NSAIDs). This interaction has been suggested to lead to an increased risk of elevated blood pressure. This general information highlights the need to disclose all medicines and OTC products used to a healthcare professional.

Q: Are there any known interactions between Urotrim and other medicines for blood pressure?

A: The regulatory safety profile advises caution when Urotrim is used with other medicines that are known to prolong the QT interval. This group can include certain medications prescribed to manage heart rhythm or blood pressure. The additive risk of such pharmacodynamic interactions is noted in official documentation.

Q: Is there an interaction risk between Urotrim and alcohol?

A: Official patient information highlights that alcohol consumption while taking Urotrim can increase the Central Nervous System (CNS) side effects. Specifically, combining the medicine with alcohol increases the risk of drowsiness and sleepiness. Because of this enhanced risk, regulatory guidance suggests limiting or avoiding alcohol.

Q: Does Urotrim contain lactose or other common allergens?

A: The official product information specifies that the tablets contain lactose monohydrate as an inactive ingredient (excipient). Due to this content, the medicine is strictly contraindicated for patients who have rare hereditary issues such as galactose intolerance, total lactase deficiency, or glucose-galactose malabsorption.

Q: Does Urotrim affect the results of any common medical lab tests?

A: Research on the drug's metabolic activity, known as in vitro studies, has demonstrated that Solifenacin is not expected to interfere significantly with common laboratory tests that assess liver enzyme function (specifically CYP enzymes). This means the medicine is unlikely to inhibit the enzymes required for many common lab test results.

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How should Urotrim (ANTISPASMODIC) be stored and disposed of?

How to Store and Dispose of Urotrim (ANTISPASMODIC)?

Storage Requirements

Urotrim (Solifenacin succinate) must be stored strictly according to regulatory labeling to maintain its stability. Tablets must be kept at a temperature not exceeding 30 C. The medicine must be protected from both light and moisture, and should remain in its original container, which must be kept tightly closed.

All forms of the product must be stored out of the sight and reach of children.

Stability and Handling

For the liquid oral suspension, a specific stability limit applies: once the bottle is opened, the product must be used within 28 days.

Disposal Instructions

Expired or unused Solifenacin succinate must not be thrown away via household waste or poured into wastewater. Disposal must be conducted according to local regulatory requirements by returning the product to a pharmacist or participating in official medicine take-back programs.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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