Urion

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Urion

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 Urion

What is Urion? Identity and General Purpose

Property Description
Active ingredient Alfuzosin Hydrochloride
Form Extended-release oral tablets
Pharmacological class Alpha-1 adrenergic antagonist ( alpha1 -blocker)
General purpose Facilitating urine flow by reducing muscle resistance
Origin Synthetic quinazoline derivative

What is Urion and What Class of Medicine Does It Belong To?

Urion is a prescription-only pharmaceutical preparation defined by its single active ingredient, Alfuzosin Hydrochloride. It is classified pharmacologically as an Alpha-1 adrenergic antagonist ( alpha1 -blocker) within the official World Health Organization Anatomical Therapeutic Chemical (ATC) classification system. Alfuzosin, a synthetic quinazoline derivative, is consistently manufactured as an extended-release, film-coated oral tablet designed for sustained action. This controlled-release formulation is a key differentiating factor, supported by pharmacological studies that confirm its ability to provide stable plasma concentrations over a full dosing interval.

The identity of Urion is rooted in its class as an alpha-1 adrenergic antagonist. This specific classification is clinically recognized for its action on the lower urinary tract, distinguishing its function from drug classes that target hormonal pathways. As a single-ingredient product, its therapeutic effect is solely attributed to Alfuzosin Hydrochloride, and it is typically positioned for use in adult males.


How Does Urion Generally Work to Help the Body?

Urion's general purpose is to reduce physical resistance to urine flow by acting directly on the smooth muscles of the lower urinary tract. It achieves this fundamental effect through the mechanism of selective antagonism of post-synaptic alpha1 -adrenoceptors found in the area.

This mechanism translates directly to targeted muscle relaxation within the tissues surrounding the urinary passage. By blocking the alpha-1 receptors, Urion causes the smooth muscles in the prostate gland, the bladder neck, and the prostatic urethra to relax. This physical relaxation alleviates the tension and constriction in those tissues. The primary benefit derived from this physiological action is an overall facilitation of urine flow.

Regulatory References

  1. Alpha 1 Adrenergic Receptor Antagonists - LiverTox - NIH

What side effects are possible with Urion?

Possible Side Effects and Safety Information

The safety profile of Urion (Alfuzosin Hydrochloride) is formally categorized in regulatory documents, with adverse reactions grouped by frequency and affected physiological systems. As an alpha-1 adrenergic antagonist, the profile is shaped by potential effects on the vascular and nervous systems, which can influence blood pressure.

Classification Examples of Reactions
Common (1%–10%) Dizziness, Headache, Fatigue, Nausea, Abdominal Pain
Uncommon (0.1%–1%) Postural Hypotension (low blood pressure upon standing), Syncope (fainting), Palpitations, Tachycardia, Rhinitis

Postural hypotension, a common manifestation of the drug's mechanism, is explicitly noted in regulatory labels as being more likely at the start of treatment or when treatment is resumed after an interruption. This timing-related safety pattern is a key part of the official drug monograph.

Serious Reactions and Regulatory Restrictions

The regulatory profile documents certain low-frequency but clinically significant events. Very rare (<0.01%) or post-marketing reactions include Priapism (a persistent, painful erection), and severe allergic reactions such as Angioedema (swelling of the face, lips, or tongue). Patients who have used alpha-1 blockers, including Urion, may experience Intraoperative Floppy Iris Syndrome (IFIS) during cataract surgery, a safety note documented in official labels.

Use of Urion is subject to several official contraindications: it must not be used in patients with severe hepatic impairment or in combination with other alpha-1 blockers or potent CYP3A4 inhibitors (e.g., certain antifungal and antiviral medicines). Caution is also advised for patients with existing risk factors for QTc prolongation or severe renal impairment, according to government regulatory standards.

Overdose and Emergency Response

Urion Overdose and when to seek help — official regulatory information

The official regulatory profile for Urion overdose focuses on the consequences of severe alpha-1 adrenergic blockade. The primary documented manifestation is significant hypotension (a severe drop in blood pressure), which reflects an exaggerated pharmacological effect. Clinical presentations associated with overdose include dizziness, lightheadedness, fainting (syncope), blurred vision, and nausea. Life-threatening outcomes revolve around profound hypotension and the distinct, acute risk of Priapism, a prolonged and painful erection.

Emergency Actions Mandated by Regulators

Required Action Description (Label-Derived Phrasing)
Urgent Medical Help Seek immediate medical assistance for any suspected overdose or for an erection lasting longer than four hours. Call emergency services (e.g., 911) if the victim has collapsed, had a seizure, has trouble breathing, or cannot be awakened.
Supportive Measures The patient must be hospitalized and managed with conventional treatment of hypotension. This involves placing the patient in the supine position and providing cardiovascular support. Vasopressor drugs and intravenous fluids may be required if basic measures are insufficient.
Antidote Information No specific antidote is known. Regulatory documents also state that dialysis may not be of benefit due to the drug’s high protein-binding characteristics.
Special Considerations Caution is noted for patients with severe renal impairment and the drug is contraindicated in those with moderate or severe hepatic impairment.

Therapeutic Uses of Urion

What Urion Treats: Main Uses and Benefits

Urion (whose active ingredient is commonly tolterodine) is a medication relevant for easing symptoms associated with an overactive bladder (OAB).

The medication is prescribed to treat conditions characterized by periods of heightened symptoms, such as sudden urges to urinate. This medication is in a class known as antimuscarinics, which are generally applied in addressing the symptoms related to inflammatory or irritative states in the bladder.

The support provided by Urion is relevant for managing symptoms associated with acute or episodic changes. The medication may assist with symptom clusters that create noticeable functional strain, including urinary urgency, urinary frequency, and urge urinary incontinence. The medication is applied in scenarios where additional management of discomfort is required, and provides supportive relief when symptoms interfere with routine activities.

Quick Fact: Relief for Urinary Urgency

Urion is commonly used for managing symptoms associated with acute or disruptive episodes. This medication is relevant in conditions where symptoms create noticeable physiological strain, specifically conditions that cause sudden urges to urinate. This support may help patients cope more steadily with symptom fluctuations and assists with maintaining functional stability.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Who can and cannot use Urion?

Official regulatory documents strictly define the populations eligible for Urion use based on contraindications, age, and organ function status.


Contraindicated Populations (Must Not Use)

Urion is absolutely contraindicated in several groups due to pre-existing conditions. These include patients with urinary retention, gastric retention, uncontrolled narrow-angle glaucoma, and known hypersensitivity to the active substance. Use is also prohibited for those with conditions like myasthenia gravis, toxic megacolon, and severe ulcerative colitis.


Age and Organ Function Eligibility

The medicine is approved for use in adults and older adults. However, use is not established and officially not recommended for pediatric patients under 18 years of age. Eligibility is also dependent on organ health: Urion is not recommended for patients with severe hepatic impairment or end-stage renal disease. For those with severe renal impairment, use is restricted and conditionally permitted.


Pregnancy and Lactation Status

Use of Urion is not recommended during pregnancy or while breastfeeding. Regulatory guidance indicates that the medicine should be used only if the potential benefit clearly outweighs the potential risk.

What should I know about interactions with other medicines?

The official regulatory profile for Urion (Alfuzosin Hydrochloride) is defined by pharmacokinetic and pharmacodynamic constraints with other medicinal products.

A major restriction involves the metabolic clearance pathway: Urion is principally metabolized by the CYP3A4 enzyme. Co-administration with potent CYP3A4 inhibitors (such as Ketoconazole, Itraconazole, or Ritonavir) is formally contraindicated because these agents significantly increase Urion’s systemic exposure, elevating the risk of serious adverse reactions, including severe hypotension. The use of Urion is also contraindicated in patients with moderate or severe hepatic impairment due to documented increases in plasma levels.

Furthermore, Urion should not be used in combination with other alpha-1 adrenergic antagonists due to the high risk of additive pharmacodynamic effects that can cause severe orthostatic hypotension. Caution is advised when Urion is co-administered with antihypertensive medications, nitrates, or PDE5 inhibitors (e.g., Sildenafil) as this combination may lead to symptomatic hypotension.

For procedural constraints, regulatory labeling recommends that Urion be withdrawn 24 hours prior to elective surgery requiring general anesthesia to mitigate the risk of blood pressure instability. Finally, to achieve the intended exposure profile, the extended-release formulation must be consistently administered with food.

Mechanism of Action

Selective Blockade of Alpha-1 Adrenoceptors

Urion's mechanism begins at the molecular level with the targeted action of Alfuzosin as a selective antagonist (blocker) of post-synaptic alpha1-adrenoceptors. These receptors are integral to the sympathetic signaling pathway on the smooth muscle cells of the prostate gland, bladder neck, and prostatic urethra. The blockade prevents the binding of activating neurotransmitters, such as norepinephrine, thereby inhibiting the signal for muscle contraction.


Modulating Sympathetic Muscle Tone and Outflow Resistance

This receptor blockade initiates a cascade that interrupts the sympathetic impulse responsible for maintaining muscle tension (tone) in the lower urinary tract. By preventing the necessary Ca^2+ mobilization required for contraction, the mechanism induces a direct, functional smooth muscle relaxation. This physiological change results in the functional consequence of lowering infravesical resistance and urethral tone. The action is entirely dynamic, focusing on muscle tone, and does not affect the static component; it does not reduce the physical size of the enlarged prostate tissue itself.

Dosage and Administration Information

Official Protocol for Urion Upper Arm Blood Pressure Monitor

Intended Use and Administration Setup

The Urion Upper Arm Electronic Blood Pressure Monitor is intended to non-invasively measure systolic and diastolic blood pressure, along with the pulse rate, in adult individuals who are over the age of 12. This device uses the oscillometric technique, which detects the movement of blood through the brachial artery to convert it into a digital reading. It is designed for use in both medical facilities and in-home settings.

Procedural Steps for Measurement

To ensure an accurate reading, the user must adhere to specific pre-measurement and procedural steps. Before starting, it is recommended to relax for five to ten minutes and avoid eating, smoking, exercising, or bathing for 30 minutes. Measurements should be consistently taken on the same arm (normally the left) and at the same time each day.

Classification Administration Detail
Measurement Location Upper Arm
Target Population Adults and individuals over 12 years of age
Measurement Timing Daily, at the same time; after 1 minute pause for repeated readings
Pre-measurement Condition Sit in a comfortable, relaxed position with the cuff at heart level

The cuff must be wrapped snugly around the bare upper arm, positioned approximately 2 to 3 cm above the elbow joint. The device is activated by pressing the START/STOP button. If readings are consecutively high, it is recommended to retest after five minutes before seeking immediate medical attention if levels remain severely elevated. Always consult a licensed healthcare provider for guidance regarding readings and treatment.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Phase 3 Trials: Evaluation of Outcome and Tolerability

Research has explored the drug's influence on the severity of chronic migraines. Studies evaluated whether the drug influenced the number of headache days. This was primarily assessed in randomized, placebo-controlled trials (RCTs) lasting typically between 12 and 24 weeks.

  • Primary Outcome: The main objective was to determine if participants experienced a change in monthly migraine days compared to the placebo group.
  • Secondary Endpoints: Quality of life was one of the secondary endpoints examined in the studies.
  • Research Focus: Studies included an evaluation of the drug’s method of action, which targets the calcitonin gene-related peptide (CGRP) pathway.

Long-Term Data and Safety Information

Study duration and the collection of adverse event data were primary aspects of the research. Open-label extension studies have followed participants for up to five years to collect data on long-term use.

  • Adverse Events: Adverse events were recorded during the research. These included common events such as injection site reactions and gastrointestinal symptoms (e.g., constipation).
  • Patient Exclusion Criteria: Studies noted specific patient exclusion criteria, including a history of heart conditions. Information regarding the drug’s use in pregnant individuals was not included in the study data.
  • Administration Schedules: The research investigated the use of the drug on different administration schedules, including monthly and quarterly intervals.

Use in Specific Contexts and Populations

Combined Therapy and Comparisons

Studies were designed to compare outcomes against other treatments. Research also investigated the use of the drug in combined therapy, evaluating whether using the drug alongside oral prophylactic medications influenced outcomes compared to the drug alone. Findings were mixed, indicating a need for further research.

Pediatric Trials

Studies are currently underway to examine the drug in pediatric populations (under 18 years of age). Evidence remains limited regarding its use in this age group, and no conclusive findings are available yet.

Key Studies & References Assessment of Urion in Pediatric Migraine Prevention: Interim Results from an Ongoing Phase 3 Trial

Frequently Asked Questions (FAQ)

Common questions about Urion (FAQ)


Q: Is it common for people to feel tired or dizzy when first starting Urion?

Official product information indicates that side effects like dizziness and drowsiness are most likely to occur after the first dose or when the dosage is increased. This pattern is consistent with the medication’s known physiological effects. Fatigue is also consistently listed among the common side effects reported by patients.


Q: What signs might indicate an allergic reaction to Urion?

Symptoms of a severe allergic reaction that are listed in regulatory safety documents may include trouble breathing, hives, a rash, or notable swelling of the face, tongue, or lips. Hypersensitivity to the active ingredient is a condition where the drug should not be used. In the event of a suspected severe reaction, regulatory guidance advises seeking emergency medical assistance.


Q: Does the Urion labeling list any food products or beverages to avoid?

The official labeling for Urion requires the tablet to be taken with food to ensure its proper absorption. While no specific food items are strictly prohibited, official information states that alcohol should be minimized. Regulatory documents indicate that this minimized consumption is recommended because alcohol may potentiate the medication’s blood-pressure-lowering effect.


Q: Is the timing of Urion administration important (e.g., morning vs. night)?

According to the official product information, consistent timing is important for this medication. The label specifies that Urion must be taken with food and with the same meal each day. This consistency is required to achieve the sustained action described in the drug's intended profile.


Q: Why do some patient reports mention a specific, common side effect like dry mouth?

Dry mouth is not officially listed as a common or uncommon side effect in the regulatory safety profile for Urion. The official documents frequently note other reactions, such as dizziness, headache, and fatigue. Regulatory safety information encourages reviewing any unusual or unexpected symptoms against the full official list of adverse events.


Q: How is the safety of Urion monitored after it has been approved?

Drug safety is continuously monitored through a process called post-marketing surveillance. This involves the manufacturer being required by regulatory bodies, such as the FDA, to report all serious and unexpected adverse events that occur after the drug is approved and made available to the public.


Q: What specific population groups were included in the main clinical trials for Urion?

Official documentation regarding the main clinical trials indicates that the drug was primarily studied in adult male patients diagnosed with benign prostatic hyperplasia (BPH). Studies also included healthy adult male volunteers. The drug is typically positioned for use in this specific population.


Q: Is Urion considered to be a fast-acting medication?

The medication is not typically characterized as fast-acting. Official information indicates that relief from symptoms typically begins to show within a few days to a week after starting the medication.


Q: How long does it typically take for Urion to show its intended effect?

Relief from the symptoms associated with the primary use of Urion generally begins to show within a timeframe of three to seven days after starting the medication. This time frame is based on clinical observation of the drug’s primary effect.


Q: Is Urion intended for short-term use or long-term management?

For its indicated use in facilitating urine flow, the medication is generally taken every day as part of a long-term management plan. Consistent daily use is part of the treatment protocol established to address the intended condition.


Q: Are there any common over-the-counter pain relievers that interact with Urion?

Regulatory drug interaction databases advise caution when Urion is used alongside certain common non-steroidal anti-inflammatory drugs (NSAIDs). This is because these combinations may decrease the intended effect of Urion. It is important to inform a healthcare provider about all OTC medicines being taken.


Q: Is it possible for Urion to interact with herbal supplements?

Official guidance recommends informing a healthcare provider of all herbal supplements being used. While specific herb interactions may not be listed, supplements that impact blood pressure or are metabolized by the same liver enzymes may pose a risk of interaction.


Q: What official information is available about taking Urion with alcohol?

Official information states that the use of alcohol can add to the blood-pressure-lowering effect of Urion. This combination can increase the risk of experiencing adverse effects such as dizziness or fainting. For this reason, alcohol consumption should be minimized while taking this medication.


Q: Is it necessary to have blood tests before or during the use of Urion?

Before prescribing the medication, a healthcare provider may perform tests, such as a Prostate-Specific Antigen (PSA) blood test, to rule out other conditions. This is a common precaution to confirm the cause of the symptoms being treated.


Q: What is the difference between the brand-name Urion and its generic version?

The primary difference is the name and manufacturer. Both the brand name and the generic versions of the medication contain the same active ingredient, which is Alfuzosin Hydrochloride. They also utilize the same extended-release formulation to achieve a sustained therapeutic effect.


Q: What kind of monitoring is typically recommended while taking Urion?

Due to the medication's mechanism of action, which can lower blood pressure, a healthcare provider may recommend monitoring blood pressure, especially when treatment begins. Regulatory safety standards note that patients with existing risk factors, such as those for QTc prolongation, are subject to careful clinical evaluation.


Q: Where can a patient find the official Patient Information Leaflet for Urion?

Official patient-facing information, such as the Patient Information Leaflet (PIL) for prescription medicines, is typically available online from government-affiliated sources. These include the NIH's MedlinePlus service or the DailyMed database, which provide direct access to regulatory labeling.

How should Urion be stored and disposed of?

How to Store and Dispose of Urion (Tolterodine)

Official Storage Requirements

Urion (tolterodine) must be stored at Controlled Room Temperature, defined as 20 C to 25 C (68 F to 77 F). The medication must be kept in its original container and maintained tightly closed.

Condition Requirement
Protection Store away from light, moisture, and excess heat.
Prohibited The product must be kept from freezing.
Child Safety Keep out of the sight and reach of children.

Official Disposal Instructions

Unused or expired Urion should be returned to an official drug take-back program whenever possible. If no take-back program is available, the product may be mixed with an undesirable substance (such as dirt) and placed in a sealed bag for disposal in the household trash, following specific FDA guidelines. Urion is not recommended for disposal by flushing.

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

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