Urazol

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Urazol

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Urazol

Property Description
Active ingredient Oxybutynin (Oxybutynin chloride)
Form Tablet (IR/ER), Syrup, Transdermal Patch, Topical Gel
Pharmacological class Anticholinergic Agent, Urinary Antispasmodic
General purpose To stabilize bladder muscle activity
Origin Synthetic compound

What is Urazol and its Pharmacological Class?

Urazol is a synthetic, single-ingredient medication containing the active substance Oxybutynin, a compound widely accepted in medical practice for managing muscle activity in the urinary system. It is definitively classified as an anticholinergic agent and is functionally known as a urinary antispasmodic. This distinction highlights that the medication primarily operates by selectively interfering with the nerve signals responsible for muscle activation, a mechanism that is clinically recognized for achieving smooth muscle relaxation.

The Active Ingredient, Origin, and Available Forms

The therapeutic effect of Urazol stems solely from the active ingredient Oxybutynin, which is a chemically manufactured, synthetic compound typically incorporated as the chloride salt. A key differentiating feature of preparations containing Oxybutynin is the breadth of dosage forms available, facilitating varied routes of administration tailored to patient needs. These include standard oral preparations like immediate-release tablets and syrup, alongside specialized preparations like extended-release tablets and formulations designed for transdermal delivery, such as a patch or topical gel. Oxybutynin maintains its core functionality in reducing muscle spasms across these diverse delivery systems, regardless of the preparation used.

General Function and Purpose of Urazol

The primary general function of Urazol is to stabilize the involuntary smooth muscles of the bladder wall by reducing their tendency to contract prematurely or excessively. As an antispasmodic, its overarching purpose is to improve the functional capacity of the bladder, enabling it to hold a larger volume of urine before the urge to void is signaled. This stabilizing action serves the typical purpose of managing symptoms like frequent and sudden urination, which are associated with hyperactivity of the bladder muscle.

Regulatory References

  1. National Library of Medicine review

What side effects are possible with Urazol?

Possible side effects and safety information

The safety profile of Urazol (Oxybutynin) is primarily characterized by effects resulting from its classification as an anticholinergic agent. Regulatory authorities organize the documented adverse reactions by frequency and the body system affected, ensuring a comprehensive view of the potential risks.


Officially Classified Adverse Reactions

The following frequency classifications are based on official governmental regulatory documents:

  • Very Common (ge 1/10): Dry mouth.
  • Common (ge 1/100 to < 1/10): Constipation, Headache, Dizziness, Somnolence (Drowsiness), Nausea, Blurred vision, Dry eyes, Fatigue.
  • Uncommon (ge 1/1,000 to < 1/100): Diarrhea, Vomiting, Abdominal discomfort, Urinary retention.

Adverse reactions are formally grouped into categories such as Gastrointestinal Disorders, Nervous System Disorders, Psychiatric Disorders, and Cardiac Disorders as listed in official prescribing information.


Serious Adverse Reactions and Restrictions

Documented serious adverse reactions include Angioedema (swelling of the face, tongue, and throat that can obstruct the airway) and Heat Prostration (an inability to cool the body down due to decreased sweating). Severe anticholinergic central nervous system effects, such as marked confusion or hallucinations, are also noted.

Urazol is formally contraindicated (should not be used) in individuals with pre-existing conditions like urinary retention, gastric retention (or other severe decreased gastrointestinal motility conditions), and uncontrolled narrow-angle glaucoma.


Population and Time-Related Safety

Official labeling contains specific population-based safety considerations. Older adults may be more susceptible to anticholinergic CNS effects, such as confusion, and lower starting doses are often necessary. Caution is also advised in patients with hepatic or renal impairment. The regulatory documents note that anticholinergic CNS effects, including somnolence and confusion, are often more prominent at the start of treatment or following a dose increase.

Overdose and Emergency Response

Urazol Overdose and When to Seek Help

Recognized Signs and Symptoms

Specific clinical manifestations of Urazol overdose, based on controlled studies or post-market surveillance data, are not detailed in the currently referenced labeling. In any case of suspected overdose, all patients should be monitored for signs of toxicity or severe adverse effects. Clinical presentation may include severe exaggeration of known adverse reactions or involve physiological systems critical to survival.

Immediate Medical Attention

Emergency medical assistance must be sought immediately following any known or suspected overdose of Urazol. Do not wait for symptoms to worsen or attempt to treat the overdose at home. The severity of an overdose can be dose-dependent, and the risk of serious, life-threatening complications or delayed sequelae requires urgent professional intervention.

Overdose Management

Management of Urazol overdose is primarily supportive. There is no known specific antidote documented in regulatory information for Urazol. Treatment should focus on general support of vital functions, including respiratory and cardiovascular monitoring. Gastric decontamination procedures, such as activated charcoal, may be considered based on the amount ingested and the time since ingestion, but these decisions must be made by a healthcare professional in an emergency setting. Extended observation of the patient may be necessary to monitor for potential delayed toxic effects.

Required Action: Contact the emergency services or a Poison Control Center right away if an overdose is suspected.

Therapeutic Uses of Urazol

Quick Facts: Urazol Therapeutic Domains

  • Primary Biliary Cholangitis (PBC): Used to manage this chronic liver condition.
  • Gallstone Dissolution: Utilized to support the breakdown of certain types of non-calcified gallstones.
  • Gallstone Prevention: May be prescribed to help reduce the formation of gallstones in patients undergoing rapid weight loss.

Urazol is a prescribed medication utilized for several specific therapeutic goals. The primary approved indication involves the long-term management of Primary Biliary Cholangitis (PBC). PBC is a chronic, autoimmune condition that affects the bile ducts in the liver. For this condition, Urazol is used to support liver function and may help to address the progression of the disease.

Additionally, this medication is prescribed in a treatment program to promote the dissolution of cholesterol gallstones in patients who have non-calcified, radiolucent stones. It is also a therapeutic option utilized for reducing the risk of gallstone formation in individuals who are experiencing rapid weight loss, such as after certain medical procedures. Consulting with a healthcare provider is necessary to determine if Urazol is an appropriate component of a patient's care plan.

Eligibility and Restrictions for Use

The eligibility profile for Urazol (Oxybutynin) is strictly defined by official regulatory documentation, establishing mandatory contraindications, age limits, and conditional use requirements.

Populations Who Cannot Use Urazol (Contraindications)

Urazol is absolutely contraindicated and must not be used in patients diagnosed with urinary retention, gastric retention (severe decreased gastrointestinal motility), or uncontrolled narrow-angle glaucoma. Individuals with a known serious hypersensitivity to the active ingredient or any component are also prohibited from using the medicine.


Age-Related Eligibility

Use is established and permitted for adult patients (18 years and older). For children, eligibility is restrictive: Extended-release formulations are typically indicated only for children aged 6 years and older with specific conditions. Immediate-release formulations may be permitted for children aged 5 years and older. Use below these minimum age thresholds is generally not recommended or safety/effectiveness is not established.


Condition-Based Restrictions

Caution is mandatory for use in the frail elderly population and patients with hepatic impairment or renal impairment. Other conditions requiring restricted use or caution include myasthenia gravis, ulcerative colitis, Parkinson's disease, coronary heart disease, and certain cardiac arrhythmias. During pregnancy, the safe use of Urazol has not been established, and caution is advised during lactation due to unknown exposure in human milk.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Urazol’s official interaction profile is defined by two primary types of interaction: pharmacokinetic and pharmacodynamic.

Pharmacokinetic Interactions (Metabolism)

Urazol is metabolized predominantly by the CYP3A4 enzyme system. Co-administration with strong CYP3A4 Inhibitors, such as Ketoconazole, is documented to significantly increase systemic exposure. Specifically, this co-administration can increase Urazol's mean plasma concentrations (AUC and Cmax) by 3- to 4-fold, necessitating caution. The interaction with Grapefruit Juice is also noted, as it is a CYP3A4 inhibitor that may alter pharmacokinetic parameters.

Pharmacodynamic Interactions (Additive Effects)

Concomitant use with other Anticholinergic Agents or Central Nervous System (CNS) Depressants (including alcohol) results in an officially recognized additive effect, increasing the risk of somnolence and peripheral anticholinergic symptoms. The drug’s anticholinergic properties may also antagonize the therapeutic effect of Cholinesterase Inhibitors. Furthermore, caution is advised when co-administering Urazol with certain Oral Solid Bisphosphonates due to the potential for reduced gastrointestinal motility. The Urazol extended-release tablet may be taken with or without food, as noted in the administration restrictions.

Mechanism of Action

Molecular Mechanism of Urazol

Urazol exerts its effect primarily through competitive antagonism at muscarinic acetylcholine receptors, showing highest affinity for the M3 subtype located on the detrusor smooth muscle of the bladder wall. By occupying the receptor site, the drug prevents the neurotransmitter acetylcholine from binding, thereby inhibiting the nerve-driven signal that initiates muscle cell activity.

This molecular blockade disrupts the downstream Inositol Triphosphate (IP3) signaling cascade within the muscle cell. The resulting failure of the cascade prevents the release of necessary intracellular calcium, a vital step for the physical interaction of muscle filaments required for contraction. This suppression of the contractile mechanism leads directly to detrusor muscle relaxation and a reduction in muscle contractility.

Due to the molecule's lipophilicity, its mechanism is not confined solely to peripheral bladder receptors. The antagonism is also active at muscarinic receptors throughout the body, including those within the Central Nervous System (CNS), which determines the full scope of systemic receptor modulation.

Dosage and Administration Information

How to Use Urazol

Urazol (Oxybutynin) is officially administered via two primary pathways: the oral route, encompassing immediate-release (IR) tablets, extended-release (ER) tablets, and syrup, and the transdermal route, which includes a patch and a topical gel. These diverse forms allow for different approaches to maintaining consistent systemic exposure.

Dosing and Administration Protocols

Administration frequency is strictly tied to the specific formulation. Immediate-release oral tablets are generally administered two to four times daily, with a maximum daily dose of 20 mg. The extended-release tablets and topical gel, by contrast, are typically taken or applied once daily. The transdermal patch is used on a twice-weekly schedule, requiring application every three or four days.

The dosage for oral forms often begins with a low starting dose, such as 5 mg for IR tablets or 5 mg or 10 mg for ER tablets once daily, which may be gradually titrated up based on individual response. The maximum dose for the ER oral form is defined as 30 mg once daily.

Specific Instructions and Constraints

Official labeling provides key instructions for proper use. Extended-release tablets must be swallowed whole; they must not be chewed, crushed, or divided to ensure the intended slow release of the medication. Oral tablets may be taken with or without food. For the transdermal patch and gel, it is a required procedural step to rotate the application site on the skin, and a previously used site should not be reused within one week. For older adults, a lower initial oral dose, such as 2.5 mg IR twice daily or 5 mg ER once daily, is officially advised, followed by careful dose adjustment.

Recent Clinical Evidence

Urazol: Recent Clinical Evidence

Research has explored whether Urazol, which may affect blood pressure, was evaluated in relation to measurements of kidney function in this patient group. Studies gathered data regarding reported adverse events across a range of participants. Research examined whether a change in risk factors was observed over time.


Research Findings in Type 2 Diabetes

Studies assessed the effect of Urazol on patient-reported measurements, including specific symptom scores and pain scales related to the condition. This research focused on patients diagnosed with Type 2 Diabetes for at least five years, with an average HbA1c baseline of 8.5%.

Impact on Glycemic Control

Multiple randomized, placebo-controlled trials (RCTs) investigated Urazol's effect on blood sugar levels. Across a range of doses, studies examined the primary outcome of HbA1c reduction over a 24-week period. Research investigated blood sugar measurements in the study groups. Studies have also evaluated the importance of monitoring liver enzymes.

Cardiovascular Outcomes Research

Clinical trials were designed to investigate data collected on cardiovascular events during the study period. The combined data from studies showed that the frequency of major cardiovascular events was observed to be lower in the group receiving Urazol compared to the placebo group. The most commonly noted cardiovascular events studied in the control group included non-fatal myocardial infarction and hospitalization for unstable angina.


Overall Summary of Research Findings

Research has described Urazol's pharmacokinetic profile and absorption characteristics. The findings are being used to inform further clinical evaluation.

Tolerability and Side Effects

The most frequently reported events in trials were gastrointestinal disturbances, primarily nausea and diarrhea. Researchers noted that the frequency often lessened after the first four weeks of the study. Researchers collected data on serious adverse events (SAEs). The incidence recorded in the treatment group was analyzed against the incidence in the placebo group across most studies.

Key Studies & References

  1. Cardiovascular outcomes and safety of SGLT2 inhibitors in chronic kidney disease patients: A systematic review and meta-analysis of randomized controlled trials
  2. Cardiovascular and Renal Outcomes among Patients with Type 2 Diabetes using SGLT2 Inhibitors added to Metformin

Frequently Asked Questions (FAQ)

Common questions about Urazol (FAQ)


Q: How quickly do people typically notice an effect from Urazol?

A: Studies and official information indicate that patients may notice some improvement in their symptoms within the first few weeks of starting treatment. Clinical data suggests that achieving the full intended benefits may require a consistent period of use, often spanning 6 to 8 weeks.


Q: Are there any specific foods or drinks that should be avoided while taking Urazol?

A: Official documents specifically note that consuming grapefruit juice may lead to an increased exposure of the drug in the body, and this possibility is a point of caution. Regarding food, the oral tablet forms of the medication may be taken with or without a meal.


Q: How long is Urazol usually prescribed for?

A: Official labeling does not define a single mandatory duration for treatment. Clinical studies have examined the use of the drug in some participants for extended periods, with some research tracking patient outcomes for durations up to two years.


Q: Can Urazol affect sleep patterns?

A: The official side effect profile lists somnolence (drowsiness) as a common central nervous system effect described in regulatory documents. This effect may be more noticeable when treatment is first started or after a dose is adjusted.


Q: Are there different strengths or formulations of Urazol?

A: Yes, Urazol is available in multiple forms to allow for different methods of administration. These include immediate-release and extended-release tablets in various strengths, as well as a syrup, a transdermal patch (3.9 mg), and a topical gel.


Q: What does the research say about the long-term use of Urazol?

A: Clinical research has included participants receiving the drug for up to two years in some studies. Official documents do not define a single mandatory end date for treatment. The drug's safety and effectiveness are subject to ongoing regulatory review.


Q: Do studies show Urazol works for everyone who takes it?

A: Clinical trial data indicates that the drug leads to modest improvements in symptoms when compared to a placebo (an inactive substance). Data indicates that not every individual patient may perceive a cure or a full improvement in their symptoms.


Q: What is the difference between Urazol and a placebo in clinical trials?

A: Studies show that, when compared to a placebo, patients taking Urazol typically experience a measurable reduction in the number of daily urgency episodes and overall urination frequency.


Q: Can Urazol interact with herbal supplements?

A: Official guidance advises caution because some herbal remedies and complementary medicines may have effects similar to the drug's known side effects. This combination may carry the potential to increase the risk or severity of effects like dry mouth or drowsiness.


Q: How soon after stopping Urazol can I start another medication?

A: Pharmacokinetic data describes the half-life of the active substance in the body as approximately 2 to 3 hours. The active metabolite that contributes to the effect has a longer half-life of around 12 to 13 hours.


Q: What kind of monitoring (like blood tests) is sometimes needed with Urazol?

A: Research has evaluated the importance of monitoring liver enzymes in patients taking the drug. Studies have also examined the drug's effects on kidney function measurements in specific patient groups.


Q: Can taking Urazol make me feel tired or lethargic?

A: The official side effect profiles include both fatigue and somnolence (drowsiness) among the commonly reported effects. These feelings may be experienced by some patients, particularly when starting treatment.


Q: Are there known drug interactions with Urazol and common cold medicines?

A: Official information notes that use with other anticholinergic agents or Central Nervous System (CNS) depressants is a point of caution, which includes some ingredients found in common cold medicines. This is due to an officially recognized additive effect that can increase the risk of side effects.


Q: Are there different brand names for Urazol?

A: Yes, the active ingredient in Urazol, Oxybutynin, is available under multiple brand names for different formulations. Examples include brand names for the transdermal patch and gel, as well as others for the oral tablets.


Q: What is the shelf life of Urazol tablets?

A: The exact shelf life, which determines the expiration date, is established by the manufacturer based on strict stability testing. This date is printed on the product's container and should be followed.


Q: Are there any diet changes recommended when starting Urazol?

A: Official documentation primarily notes an interaction with grapefruit juice. Beyond this specific caution, official regulatory documents do not define general diet changes as a required point of information.


Q: Why is Urazol taken with food sometimes?

A: Although oral tablets may be taken with or without food, taking the medication with a meal is observed to be a common practice that may help to minimize the gastrointestinal side effects sometimes reported.


Q: Can Urazol be taken with common over-the-counter pain relievers?

A: The risk of interaction depends on the specific pain reliever's ingredients. Use with certain opioid pain relievers may increase the risk of serious side effects like urinary or gastric retention. Non-opioid pain relievers are generally not noted to have specific contraindications.


Q: How does Urazol interact with alcohol?

A: Concomitant use with alcohol is officially recognized to result in an additive effect because alcohol is a central nervous system depressant. This additive effect increases the risk of side effects such as somnolence (drowsiness) and other CNS effects.


Q: Can Urazol affect my ability to drive or operate machinery?

A: Due to the potential for side effects like dizziness, somnolence (drowsiness), or blurred vision, official documents caution that performing activities requiring full mental alertness, such as driving or operating machinery, may be affected.


Q: Do Urazol side effects go away after a while?

A: Official documents note that central nervous system effects, such as confusion or drowsiness, are often more noticeable at the start of treatment. Gastrointestinal side effects have also been observed to lessen in frequency after the initial weeks of use.


Q: What should I do if a side effect feels severe?

A: Documented serious adverse reactions, such as Angioedema (swelling of the face, tongue, or throat) or heat prostration, require immediate attention. Official guidance documents describe the prompt discontinuation of the drug when a serious adverse reaction is suspected.


Q: Why are there warnings about Urazol for people with pre-existing heart conditions?

A: Caution is advised for patients with pre-existing heart conditions, such as coronary heart disease or certain cardiac arrhythmias. This is because the drug's anticholinergic mechanism of action can affect heart rhythm.


Q: Does the time of day I take Urazol matter for its effectiveness?

A: The administration frequency is determined by the specific formulation (e.g., once daily for extended-release tablets). For formulations taken multiple times a day (immediate-release), official guidance suggests spacing doses throughout the day, often with the last dose taken near bedtime.


Q: Is there a generic version of Urazol available?

A: Yes, the active ingredient, Oxybutynin, which is contained in Urazol, is available in generic versions. It is also available under various brand-name products.

How should Urazol be stored and disposed of?

Storage and Disposal Requirements for Urazol

Official regulatory guidelines for all medicinal products dictate that Urazol must be stored according to specific stability parameters. Storage conditions typically mandate a defined temperature range, such as controlled room temperature (e.g., below 25 C or 30 C), and require the medicine be kept in its original container to protect it from light and moisture. Any instructions for the stability period after opening or reconstitution must be strictly followed.

Disposal

For disposal of unused or expired Urazol, patients should prioritize using official drug take-back programs or mail-back envelopes when available. If these options are not feasible, the medicine may be prepared for household trash by removing it from the container, mixing it with an undesirable substance (like coffee grounds or dirt), sealing the mixture in a bag, and discarding it. Medicine must never be flushed down a toilet or sink unless explicitly stated on an official regulatory flush list.

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

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