Urostop

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Medically reviewed

Laura Arias

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.

Overview of Urostop

Property Description
Active ingredient Tolterodine (as Tolterodine tartrate)
Form Oral dosage forms: immediate-release (IR) tablet and extended-release (ER) capsule
Pharmacological class Antimuscarinic agent
Common use Symptomatic relief of overactive bladder (OAB)
Origin Synthetic small molecule

What Type of Medicine is Urostop and What is its Composition?

Urostop is a medicinal product containing the synthetic active ingredient Tolterodine, which is classified pharmacologically as an antimuscarinic agent. This classification defines its fundamental function in modulating nerve signals that affect involuntary muscle activity, specifically within the urinary system. The product is a single-ingredient product, containing only the active substance Tolterodine, which is often administered as its tartrate salt. Tolterodine is recognized by the World Health Organization (WHO) and is classified under the Anatomical Therapeutic Chemical (ATC) code G04BD07. As an established anticholinergic agent, its use is clinically recognized for influencing nerve signaling pathways related to bladder function.


Urostop's Primary Purpose and General Effect

The primary general purpose of Urostop is to provide relief from the symptoms of excessive bladder activity, focusing on urinary urgency and frequent urination. It achieves this by acting as a genitourinary antispasmodic agent, which reduces the sudden, excessive tone of the bladder muscle. By blocking specific signals that cause the bladder wall (detrusor muscle) to contract inappropriately, the medication induces the relaxation of the bladder muscles. Tolterodine is effective in increasing functional bladder capacity by inhibiting these involuntary contractions. This effect is critical in managing daily life, where an individual might otherwise experience frequent and disruptive urges to void. This medicine provides better control over the sudden urge to urinate and reduces how often one must go.


Available Forms: Tablet Versus Capsule

Urostop is designed for oral administration and is available as two distinct oral dosage forms: an immediate-release (IR) tablet and an extended-release (ER) capsule. The difference between these pharmaceutical preparations lies in their delivery speed. The IR tablet releases the active ingredient rapidly, while the ER capsule utilizes specialized composition to release the Tolterodine slowly and consistently over a sustained period. This sustained-release feature is a common differentiating factor among antimuscarinic preparations, facilitating stable symptom management across a full day with less frequent dosing.

What side effects are possible with Urostop?

Possible Side Effects and Safety Information

The official safety profile for Urostop (Tolterodine) is defined by its antimuscarinic action, with potential adverse reactions systematically classified by regulatory authorities based on frequency and the physiological system affected. The most frequently documented adverse reactions, which appear in the Very Common category (ge 10%), is dry mouth (xerostomia).

Reactions classified as Common (ge 1% to <10%) include central nervous system effects such as headache, dizziness, and somnolence, along with gastrointestinal issues like constipation, abdominal pain, and dyspepsia. Other common effects involve the eyes, such as dry eyes and abnormal vision, and the renal system, including urinary retention.

Serious Adverse Reactions and Systemic Effects

Official regulatory documents list several clinically significant and Rare adverse reactions (ge 0.01% to <0.1%). These include convulsions, hallucinations, and cardiac failure. Furthermore, post-marketing data reports severe, immediate hypersensitivity reactions, such as Angioedema (swelling of the face, lips, tongue, or throat), which require monitoring. The safety information also notes the potential for QT prolongation (a cardiac rhythm abnormality).

Population-Specific Constraints

Safety constraints are explicitly documented for certain patient groups. Urostop is generally not recommended for use in individuals with severe hepatic impairment (Child-Pugh Class C) or severe renal impairment (creatinine clearance < 10 mL/min) due to the risk of substantially increased drug exposure. Additionally, official regulatory labels state that use in the pediatric population is not recommended. The label notes that central nervous system effects, such as dizziness and somnolence, may be more noticeable at the initiation of treatment.

Overdose and Emergency Response

Overdose and When to Seek Help

Urostop (Solifenacin succinate) Overdose Profile

Official regulatory information describes overdose primarily as an escalation of the drug's intended action, resulting in severe anticholinergic effects.

Documented Overdose Manifestations

System Affected Common Signs of Overdose
Central Nervous System Confusion, changes in mental status, fever
Autonomic System Severe dry mouth, flushing, enlarged pupils, blurred vision
Cardiovascular System Fast heart rate (tachycardia)

Required Emergency Actions

Immediate medical help is required for any signs of a severe or life-threatening reaction. The regulatory labels explicitly advise to call emergency services immediately if the affected person has collapsed, had a seizure, has trouble breathing, or cannot be awakened.

In a healthcare setting, management may involve supportive and symptomatic care. Procedural instructions include the administration of activated charcoal. Gastric lavage may be performed, but is useful primarily if completed within one hour of ingestion. Monitoring must be focused on cardiovascular safety, especially for patients with pre-existing heart conditions or risk factors for QT-prolongation.

Therapeutic Uses of Urostop

What Urostop Treats: Main Uses and Benefits

Urostop (Tolterodine) is commonly used for the symptomatic management of Overactive Bladder (OAB), a condition characterized by symptoms related to heightened physiological activity in the bladder.

Tolterodine is applied in addressing OAB with symptoms including urinary urgency, abnormal frequency of urination, and urge urinary incontinence. The medication is generally considered relevant for conditions characterized by symptoms that interfere with daily functioning, such as the sudden, compelling urge to void, providing supportive relief that may assist in managing symptoms related to physical discomfort during difficult episodes.

Urostop is relevant in therapeutic domains involving acute or disruptive symptom patterns, specifically targeting the abnormal frequency of urination during the day and, particularly, at night (Nocturia). The core patient benefit supports general well-being during symptomatic phases by assisting with maintaining functional stability, which contributes to improved comfort during periods of heightened symptoms. Urostop is commonly used across patient groups, including adults and the elderly, where OAB creates noticeable physiological strain, and is considered relevant for the management of pediatric nocturnal enuresis in appropriate cases.

Quick Fact: Supports symptoms related to Urinary Urgency and Frequency

“The medication is commonly used across domains where additional symptomatic support is needed to address groups of symptoms that may become intense or disruptive.”

Eligibility and Restrictions for Use

Eligibility Profile: Who Can and Cannot Use Urostop

Urostop (Tolterodine) is intended for use by adults who do not have any of the specific contraindications or conditions listed in the regulatory labeling. The decision to use this medicine is strictly governed by pre-existing health status and physiological constraints as defined by official drug authorities.


Absolute Contraindications (Must Not Use)

Use of Urostop is absolutely prohibited for patients diagnosed with specific severe conditions:

  • Acute Retention: Urinary retention or gastric retention.
  • Severe Comorbidities: Uncontrolled narrow-angle glaucoma, myasthenia gravis, severe ulcerative colitis, or toxic megacolon.
  • Hypersensitivity: Known hypersensitivity to the active substance or any excipients.

Restricted or Not Recommended Use

Use is restricted or not recommended in several special populations due to insufficient data or compromised drug metabolism:

Population/Condition Eligibility Status Rationale
Severe Hepatic/Renal Impairment Not Recommended Compromised drug clearance (CrCl < 10 mL/min or Child-Pugh Class C).
Mild-to-Moderate Impairment Restricted Use Requires dose reduction as stated in regulatory documents.
Pregnancy and Lactation Not Recommended/Avoid Use should be avoided due to unknown human risk or lack of safety data.
Pediatric Patients Not Recommended Safety and efficacy have not been established in children and adolescents.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Urostop's official interaction profile is primarily defined by the way the medicine is metabolized in the body. Co-administration of the Extended-Release (ER) capsule with potent CYP3A4 inhibitors (such as certain antifungals or macrolide antibiotics) is formally contraindicated. These substances substantially increase the systemic exposure of the active moiety, raising the overall drug concentration.

Other potent inhibitors of CYP2D6 (including fluoxetine) also affect clearance, increasing the exposure to tolterodine and often requiring dose management. Official regulatory labeling notes that dosage adjustments are also required for patients with documented hepatic impairment or severe renal impairment due to altered drug disposition and elevated exposure risk.

Pharmacodynamic interactions occur when Urostop is combined with other anticholinergic agents, leading to an additive increase in antimuscarinic effects. Caution is noted when Urostop is used with medicines known to prolong the QT-interval.

Conversely, co-administration with muscarinic cholinergic receptor agonists may result in a reduction of the agonist's therapeutic effect. Official drug interaction studies indicate that Urostop has no clinically significant interaction with substances such as Warfarin or Combined Oral Contraceptives. Both the immediate-release tablet and the ER capsule can be taken independently of food.

Mechanism of Action

Modulation of Peripheral Cholinergic Signaling

Urostop is a competitive antagonist primarily targeting the Muscarinic Acetylcholine Receptors (M3 subtype) located on the detrusor smooth muscle of the bladder wall. This targeted interaction within the Peripheral Nervous System directly suppresses the binding of the excitatory neurotransmitter, acetylcholine, which initiates muscle contraction.


Interrupting the Ca^2+-Mediated Contraction Cascade

The receptor antagonism disrupts the Gq/ IP3/ Ca^2+ intracellular signaling cascade. By preventing the activation of this pathway, Urostop limits the release of stored calcium ions ( Ca^2+) from the sarcoplasmic reticulum. The resulting low Ca^2+ concentration inside the cell inhibits the necessary molecular interactions of contractile proteins, such as actin and myosin.


Detrusor Smooth Muscle Relaxation Mechanism

This molecular and cellular inhibition culminates in a physiological consequence: detrusor smooth muscle relaxation. This core change results in the stabilization of the smooth muscle and the modulation of detrusor wall tension, which is the functional adjustment of the urinary storage mechanism.

Dosage and Administration Information

How to Use Urostop (Tolterodine)

Urostop is approved for oral administration and is available in two distinct dosage forms: an immediate-release (IR) tablet and an extended-release (ER) capsule.


Standard Dosing and Frequency

The standard adult dosing depends on the formulation used:

Formulation Strength (per unit) Standard Frequency Maximum Total Daily Dose
IR Tablet 1 mg, 2 mg Twice Daily (BID) 4 mg
ER Capsule 2 mg, 4 mg Once Daily (QD) 4 mg

The standard maintenance dose for the IR tablet is 2 mg BID, while the standard dose for the ER capsule is 4 mg QD.


Administration Requirements

Urostop can be taken with or without food. For the extended-release capsule, the capsule must be swallowed whole with liquid and must not be chewed, divided, or crushed.

Dose Adjustments

For specific populations, the total daily dose is reduced to 2 mg. This adjustment applies to patients with severe hepatic impairment or severe renal impairment (Creatinine Clearance 10 --30 mL/min). Treatment should typically be re-evaluated after 2 --3 months to assess the need for continued use.

Recent Clinical Evidence

Urostop: Recent Clinical Evidence

Evidence for Use in Stress Urinary Incontinence (SUI) and Climacturia (External Continence Aid)

The Urostop external device, an external device that has been studied for continence, was evaluated in observational case series and clinical usage studies. The studies focused on populations of adult males, often following prostatectomy, who experience urinary leakage. These studies research examined outcomes related to physical discomfort, including the frequency and volume of urine leakage, often relying on patient diaries and patient-reported outcomes describing perceived discomfort.

Findings describe patterns observed in the studies where men using the device was observed with reported lower frequencies and volumes of leakage episodes compared to their starting measurements. Studies monitored the impact on outcomes reflecting daily functioning or activity level.

Evidence for Use in Primary Biliary Cholangitis (PBC) and Gallstone Dissolution (If Urostop Refers to Ursodeoxycholic Acid)

For the drug component (Ursodeoxycholic Acid, if Urostop refers to Ursotop), the active agent has been studied in conditions involving systemic or functional imbalance, such as Primary Biliary Cholangitis (PBC). Research in this area involves Randomized Controlled Trials (RCTs) and comprehensive reviews of existing data. These studies research examined key outcomes related to systemic or functional imbalance, specifically monitoring changes in liver biomarkers like Alkaline Phosphatase (ALP) and bilirubin levels in adults with PBC.

Studies reported patterns related to measured changes in the levels of these elevated liver enzymes across many of the observed populations.

What is Still Uncertain About Urostop in Research

The overall evidence quality varies across studies, particularly for the external device, where many reports are limited in size and study design. For both the device and the drug, the biggest gaps include the lack of robust long-term effects that are not fully established and the limited data available for key special populations. These factors mean the research provides context about group patterns, and the study results reflect the specific conditions under which they were conducted. Findings from the main study populations may not apply directly to all groups.

Key Studies & References

  1. Randomised controlled trials of ursodeoxycholic-acid therapy for primary biliary cirrhosis: a meta-analysis
  2. Ursodeoxycholic Acid - StatPearls (for general indications and limitations)

Frequently Asked Questions (FAQ)

Common questions about Urostop (FAQ)

Q: How quickly should I expect to see results from Urostop?

Initial therapeutic effects from Urostop may begin within a few hours of administration. However, official information suggests that the medication may take up to 4 weeks or longer to achieve its full intended effect on your symptoms of overactive bladder. Healthcare providers generally assess the medicine's maximum benefit during routine follow-ups.

Q: What is the difference between Urostop and other common bladder control medicines?

Urostop (Tolterodine) is classified as an antimuscarinic agent. This means it works by targeting specific receptors in the bladder muscle to encourage relaxation. Other medicines used for bladder control may belong to different pharmacological classes, such as beta-3 agonists, or have different receptor selectivity profiles.

Q: Is it normal to feel slightly nauseous when first starting Urostop?

Official reports indicate that nausea is a less common side effect associated with Urostop. More common gastrointestinal side effects include abdominal pain and dyspepsia, which is a term for general upset stomach or indigestion. Persistent or severe nausea is a symptom generally communicated to a healthcare professional.

Q: Does Urostop interact with common pain relievers like ibuprofen?

Regulatory drug interaction information typically focuses on serious interactions, but it is generally stated that common, over-the-counter painkillers like paracetamol are safe to take with Urostop. For specific pain relievers like ibuprofen, consulting the product label or a healthcare professional can clarify potential risks with other medications.

Q: Does Urostop lose its effectiveness over time?

Clinical studies have investigated the long-term use of Urostop. Official regulatory data indicates that the medication has been well tolerated and maintains its clinical effectiveness over treatment periods lasting several months. The continuing effectiveness of the medicine is typically assessed during routine medical follow-ups.

Q: Can Urostop cause changes in vision?

Yes, official safety information lists abnormal vision and blurred vision as common side effects. These effects may impact your eyes' ability to adjust focus.

Q: Can Urostop affect my sleep pattern?

Official documents note that central nervous system effects are possible. Somnolence (sleepiness) is a common side effect, and trouble with sleeping (insomnia) has also been reported by patients taking Urostop. Any changes in alertness or sleep are noted in official safety information.

Q: Does Urostop cause drowsiness?

Yes, official safety data confirms that drowsiness or somnolence is listed as a common side effect of Urostop. Given the potential for drowsiness, official safety guidelines often recommend caution when performing tasks that require full concentration.

Q: Is Urostop a long-term or short-term treatment?

Urostop is typically prescribed for long-term use to manage the chronic symptoms of overactive bladder. While the course of treatment is usually sustained, the appropriate duration of use is determined through regular medical re-evaluations.

Q: Can Urostop affect my blood pressure?

While not a common effect, hypertension (high blood pressure) is listed in regulatory documents as an uncommon adverse event affecting the cardiovascular system in patients taking Urostop. Monitoring of general health status, including blood pressure, is part of routine medical care.

Q: What happens if I miss a dose of Urostop?

According to the official dosing instructions, if a dose is missed, patients are typically advised to skip the missed dose and return to their regular dosing schedule at the next scheduled time. Official instructions indicate that a double dose should generally not be taken to compensate for a missed dose.

Q: Are there generic versions of Urostop available?

Yes. The active ingredient in Urostop, Tolterodine, is available as a generic medication. Generic versions have the same active ingredient and are subject to the same regulatory standards as the brand-name product.

Q: Does taking Urostop mean I will need fewer bathroom trips?

The medicine is officially indicated to treat the symptoms of overactive bladder, which includes reducing urinary frequency (frequent urination) and the episodes of urge urinary incontinence (leakage associated with urgency). The drug's action is aimed at improving bladder control and reducing the severity of symptoms like frequent urination.

Q: Is Urostop known to cause constipation?

Yes. Based on regulatory safety data, constipation is one of the common gastrointestinal side effects reported by patients taking Urostop.

Q: Is Urostop effective for stress incontinence?

The official indication of the drug is for urge urinary incontinence, which is leakage associated with urgency. The medicine is not typically indicated for stress urinary incontinence, which is leakage caused by physical effort.

Q: Is Urostop known for causing weight gain?

Official regulatory reports list weight gain or unusual weight gain as an infrequent or less common side effect. Any significant, unexplained changes in body weight are generally reported to a healthcare professional.

Q: Do people report feeling dizzy after taking Urostop?

Yes, regulatory safety information confirms that dizziness or vertigo is listed as a common side effect of Urostop. Because dizziness is a reported side effect, official safety guidelines recommend caution when performing tasks that require full concentration.

How should Urostop be stored and disposed of?

How to Store and Dispose of Urostop (Tolterodine Tartrate)

Storage of Urostop must follow official regulatory requirements to ensure product stability. The medication must be kept at controlled room temperature (20 C to 25 C) and protected from both light and excess moisture. It is mandatory to store Urostop away from heat and keep it from freezing.

Packaging and Safety

Regulatory labeling requires the medicine to remain in the original container with the cap tightly closed. Urostop must be secured out of the sight and reach of children.

Disposal

Any unused or expired product must be disposed of in accordance with local requirements. Users are advised to utilize a drug take-back program. Disposal instructions prohibit keeping outdated medicine and mandate asking a healthcare professional for guidance when discarding the product.

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

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