Urorec

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Urorec

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Medically reviewed

Rosario Oropesa

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 Urorec

What is Urorec?

Urorec is a medication primarily used to treat the signs and symptoms of an enlarged prostate, a condition medically known as benign prostatic hyperplasia (BPH). It belongs to a class of drugs called alpha-1 adrenoceptor antagonists, specifically acting as a selective blocker of receptors located in the prostate, bladder, and urethra.

Mechanism of Action

The active substance in Urorec is silodosin. It works by targeting and relaxing the smooth muscles found in the prostate gland and the outlet of the urinary bladder. By reducing the tension in these muscles, the medication helps to improve urine flow and alleviate common urinary symptoms associated with BPH.

Therapeutic Purpose

In men with an enlarged prostate, the gland can press against the urethra, making it difficult to urinate. This often leads to symptoms such as:

  • A weak or interrupted urinary stream
  • Hesitancy when starting to urinate
  • A frequent or urgent need to urinate
  • Increased frequency of urination during the night
  • A feeling that the bladder is not completely empty

Urorec is used to manage these functional symptoms, helping to increase the ease of urination and improve the overall quality of life for individuals experiencing urinary obstruction due to prostate enlargement.

Regulatory References

  1. Silodosin: MedlinePlus Drug Information

What side effects are possible with Urorec?

Possible side effects and safety information

The official safety documents for Urorec (Silodosin) categorize possible effects by the frequency observed in clinical use and the body system affected. These regulatory classifications define the medicine's documented risk profile without providing clinical advice or treatment instructions.

Frequency-Classified Adverse Reactions

The incidence of documented adverse effects is grouped using standard regulatory terminology:

  • Very Common (ge 1/10): Retrograde ejaculation.
  • Common (ge 1/100 to < 1/10): Dizziness, Orthostatic hypotension, Nasal congestion, Diarrhoea.
  • Uncommon (ge 1/1,000 to < 1/100): Reduced libido, Nausea, Dry mouth, Abnormal hepatic function tests, and Allergic skin reactions (rash, pruritus, urticaria).

System-Organ Classes and Safety Constraints

Adverse reactions are formally classified across several physiological systems, including Reproductive System, Vascular System, Nervous System, and Gastrointestinal Disorders. Certain effects, such as dizziness and orthostatic hypotension, are officially noted as being often associated with the initiation of therapy.

Regulatory documentation highlights serious safety considerations, including the risk of Intraoperative Floppy Iris Syndrome (IFIS) during cataract surgery. Furthermore, use is formally contraindicated in individuals with severe renal impairment (creatinine clearance <30 mL/min) and in those with severe hepatic impairment, as defined by official prescribing information. The product label also specifies a contraindication for co-administration with strong CYP3A4 inhibitors.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profile for Urorec (silodosin) overdose is defined by its primary dose-limiting effect: postural hypotension and systemic hypotension. As documented by authorities such as the EMA and FDA, the core risk is acute low blood pressure resulting from the drug's pharmacological action. This potentially leads to severe outcomes, including syncope (fainting), necessitating immediate medical intervention.


Required Emergency Actions

If an overdose is suspected, urgent medical attention is required. Official guidance mandates contacting a Poison Information Centre, a doctor, or proceeding immediately to the Emergency Department of a hospital. These instructions emphasize that professional help must be sought for potentially severe or life-threatening symptoms.


Official Management Protocols

Should overdose result in significant hypotension, the patient requires the provision of cardiovascular support. For recent ingestion, gastric lavage or induction of vomiting may be considered by medical professionals. The regulatory information explicitly notes that dialysis is unlikely to be of significant benefit in management due to silodosin's high protein binding. Management remains symptomatic and supportive, focused on stabilizing blood pressure and heart rate.

Therapeutic Uses of Urorec

Main Uses and Therapeutic Benefits of Urorec (Silodosin)

Urorec is commonly used to help with symptoms related to Benign Prostatic Hyperplasia (BPH), which is the non-cancerous enlargement of the prostate gland in adult men. This medication is generally applied across conditions presenting with disruptive symptom manifestations that create noticeable functional strain. Clinical use is associated with the management of Lower Urinary Tract Symptoms (LUTS).

Therapeutic Symptom Domains

The primary therapeutic use involves addressing both voiding (obstructive) symptoms and storage (irritative) symptoms. This includes specific symptomatic relief for weak stream, hesitancy, incomplete bladder emptying, urinary frequency, urgency, and nocturia. This approach supports patients during phases when symptoms become more noticeable, offering supportive relief when additional symptomatic assistance is needed.

“The therapeutic use of Urorec is aligned with domains where additional symptomatic support is needed to address the disruptive manifestations of LUTS.”

The therapeutic benefit supports the easing of symptoms related to urine flow, which helps patients cope more steadily with difficult episodes and contributes to improved day-to-day comfort.

Quick Fact: Supportive Management for Obstructive Symptoms
This medication is considered relevant when the discomfort arises from physical resistance to urine flow, assisting with maintaining functional stability during symptomatic periods.

Regulatory References

  1. European Medicines Agency overview

Eligibility and Restrictions for Use

Official Eligibility Rules for Urorec (Silodosin)

Official regulatory documents define strict criteria for who can and cannot use Urorec. The medicine is indicated exclusively for adult men for the treatment of Benign Prostatic Hyperplasia (BPH) symptoms; its use is not applicable to women or the pediatric population. Elderly patients do not require a specific dose adjustment.

Use is absolutely contraindicated in patients with a known hypersensitivity to silodosin or with severe renal impairment (Creatinine Clearance <30 mL/min) or severe hepatic impairment.

Furthermore, the medicine must not be used concomitantly with strong CYP3A4 inhibitors (e.g., specific antifungals or antivirals). Patients with moderate renal impairment (CrCl 30 to 50 mL/min) are only eligible for a reduced daily starting dose.

Treatment is not recommended for patients with symptomatic orthostatic hypotension or for those scheduled to undergo cataract surgery. Before starting therapy, patients must be examined to rule out the presence of prostate carcinoma.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The interaction profile of Urorec (Silodosin) is primarily defined by pharmacokinetic and pharmacodynamic interactions documented in regulatory labeling.

Pharmacokinetic (Exposure-Altering) Interactions

The co-administration of Urorec with certain medications is strictly prohibited due to significant systemic exposure changes. Strong CYP3A4 inhibitors, such as Ketoconazole, Itraconazole, and Ritonavir, are formally contraindicated because they increase Silodosin’s maximum plasma concentration ( C max) and overall exposure ( AUC) several-fold. Additionally, the drug is a substrate for the P-glycoprotein (P-gp) transporter, and caution is required with strong P-gp inhibitors as they can also elevate plasma levels.

Pharmacodynamic (Additive) Interactions

Interactions that lead to an additive effect on blood pressure are also documented. The concurrent use of Urorec with other alpha-blockers is either contraindicated or not recommended, carrying a high risk of symptomatic hypotension. Similarly, co-administration with PDE5 inhibitors (like Sildenafil or Tadalafil) or other antihypertensive agents requires monitoring due to the potential for reinforced blood pressure lowering.

Interaction-Related Restrictions

Patients with severe hepatic impairment or severe renal impairment ( CCr < 30 , mL/min) are contraindicated for use because reduced clearance can lead to increased exposure and associated risks. Furthermore, to mitigate the risk of adverse events like orthostatic hypotension, Urorec must be taken with a meal. Consumption of grapefruit juice is restricted due to its ability to inhibit the CYP3A4 enzyme, potentially increasing drug concentration.

Mechanism of Action

Selective Blockade of Alpha-1A Receptors

Urorec (Silodosin) functions as a highly selective antagonist of the Alpha-1A (alpha1A) adrenoceptor, the primary receptor found on the smooth muscle of the prostate, bladder neck, and prostatic urethra. By competitively binding to this site, the molecule halts the signal initiated by the endogenous neurotransmitter, norepinephrine, which mediates high muscle tone in these tissues.

Physiological Cascade of Muscle Relaxation

The receptor blockade interrupts the intracellular Gq/11 protein pathway, thereby preventing the necessary release of intracellular calcium ions ( Ca^2+) within the smooth muscle cells. This inhibition of the Ca^2+ signal directly causes the smooth muscle tissue in the lower urinary tract to relax and lose contractile tension.

Targeted Reduction of Dynamic Resistance

This resulting relaxation of the smooth muscle, known as the dynamic component of obstruction, physically reduces the mechanical resistance at the bladder outlet. This mechanism involves modulation of the existing muscle tone and does not affect the static component of obstruction caused by glandular prostate bulk.

Dosage and Administration Information

How Urorec is Used: Official Administration Guidelines

Urorec (Silodosin) is administered orally in the form of hard capsules, which are available in 8 mg and 4 mg strengths. The use of this medication is based on specific dosing and administration rules.


Dosing and Administration Protocol

The standard prescribed adult dose is one 8 mg capsule once daily. It is required to take the capsule with food to ensure proper systemic delivery, and it should be taken at approximately the same time each day.

Administration Constraint General Instruction
Route and Form Oral use; capsule must be swallowed whole and not broken or chewed.
Timing Must be taken with food.
Missed Dose If dosing is interrupted for more than a few days, treatment should be restarted using the 4 mg dose once daily for one week.

Population-Specific Dosing

Dose adjustments are based on a patient's kidney function, measured by creatinine clearance (CrCl). No dose adjustment is required for older adults (≥ 65 years) or those with mild renal impairment (CrCl ≥ 50 to ≤ 80 mL/min).

Patients with moderate renal impairment (CrCl 30 to < 50 mL/min) are typically started on a lower dose of 4 mg once daily, which may be increased to the standard 8 mg daily after one week, depending on the response. The medication is not recommended for use in severe renal impairment (CrCl < 30 mL/min). The entire treatment course is generally for long-term management.

Recent Clinical Evidence

Clinical Trials for Lower Urinary Tract Symptoms (LUTS)

The clinical evidence for Urorec (silodosin) focuses on its use in men experiencing Lower Urinary Tract Symptoms (LUTS) that are thought to be caused by Benign Prostatic Hyperplasia (BPH). The core research structure is largely composed of short-term Randomized Controlled Trials (RCTs) that compared Urorec against a placebo over a defined, limited period. These trials included adult men with established LUTS, often characterized by specific symptom severity and reduced urinary flow. Systematic reviews and pooled analyses have combined measurements from these trials to broaden the evidence landscape.

Research examined how symptoms evolved by tracking changes in scores like the International Prostate Symptom Score (IPSS) over the first 12 weeks. These findings describe patterns observed in the studies, often reporting different measurements of symptom change between the Urorec and placebo groups.


Functional Measures and Long-Term Observations

Studies focused on both subjective patient-reported symptoms (e.g., nocturia, urgency) and objective functional measures. Objective research examined the Maximum Urinary Flow Rate ( Q max) and Post-Void Residual (PVR) volume. Some studies also explored changes in metrics like the Bladder Outlet Obstruction Index (BOOI).

While primary evidence is short-term, research monitored symptom patterns over intermediate intervals (up to 9 to 12 months) and extended follow-up studies reaching up to two years. However, data for periods beyond two years remain insufficient. Some long-term research describes patterns where the measured change in symptoms appeared to be less consistent over two years in specific subgroups, particularly in men with an especially large prostate gland.


Areas of Research Uncertainty

A key limitation is that most definitive data are derived from short-term RCTs, meaning certainty remains low regarding sustained changes that may occur over many years. Data for certain patient subgroups remain insufficient. There is limited information available from studies focused on major long-term clinical endpoints, such as the impact on the risk of hospitalization due to BPH-related complications. Comparative evidence exploring differences in measured outcomes between Urorec and other alpha-blockers over long periods is also limited.

Frequently Asked Questions (FAQ)

Common questions about Urorec (FAQ)


Q: Does Urorec help with all symptoms related to an enlarged prostate?

Urorec (Silodosin) is officially indicated for treating the signs and symptoms of Benign Prostatic Hyperplasia (BPH). Studies have measured improvement using the International Prostate Symptom Score (IPSS), which assesses a broad range of symptoms. This score tracks both voiding symptoms (like a weak stream) and storage symptoms (such as urgency and getting up at night, known as nocturia).


Q: What is the difference between Urorec and tamsulosin?

Regulatory information describes Urorec (Silodosin) as highly selective for the alpha-1A adrenoceptor, a characteristic that differentiates it from older alpha-blockers. Official summaries sometimes note differences in the frequency of certain side effects, such as ejaculatory disorders and orthostatic hypotension (a drop in blood pressure when standing), when comparing Urorec with other alpha-blockers.


Q: How quickly does Urorec usually start to work after the first dose?

Clinical pharmacology data suggest a rapid onset of action following the first dose. While initial improvements in lower urinary tract symptoms may be observed quickly, official studies measuring overall symptom relief often report findings from the first week and over 12 weeks of treatment.


Q: If I stop taking Urorec, will the symptoms return immediately?

If Urorec treatment is stopped, the symptoms of BPH may reappear over time. Regulatory documents specifically note that the side effect of retrograde ejaculation (where semen enters the bladder) is temporary and usually stops once the patient discontinues Urorec.


Q: Does Urorec cure the prostate problem or just manage the symptoms?

Urorec is indicated to treat the signs and symptoms of BPH, helping to manage the condition by improving urine flow. According to official documents, it does not cure the underlying prostate enlargement or treat prostate carcinoma. The official product labeling states that patients must be examined before starting therapy to rule out the presence of prostate carcinoma, as BPH and carcinoma can co-exist.


Q: Can Urorec be taken by men who also have high blood pressure?

Urorec may be taken by men with high blood pressure, but official regulatory materials advise caution during its use with most antihypertensive agents (blood pressure medicines). This is due to the potential for an additive effect that could reinforce the blood pressure lowering effect. Regulatory documents state that monitoring may be required due to this potential.


Q: Are there any specific heart conditions that prevent someone from using Urorec?

Official labeling highlights the potential for orthostatic hypotension, which is a drop in blood pressure when changing position (like standing up). Because of this, treatment with Urorec is not generally recommended for patients who already have symptomatic orthostatic hypotension.


Q: Have there been large-scale studies on Urorec's effect on quality of life?

Yes, clinical trials for Urorec tracked the drug's effect using the International Prostate Symptom Score (IPSS). This scoring system includes a measure that assesses the patient's quality of life specifically related to their BPH symptoms.


Q: What are the inactive ingredients in Urorec tablets?

The full list of inactive ingredients, or excipients, in Urorec hard capsules is included in the official regulatory product information for specific marketed formulations. These typically include substances like mannitol and magnesium stearate, in addition to the active ingredient Silodosin.


Q: Is Urorec generally taken in the morning or at night?

Official dosage and administration guidelines state that Urorec should be taken once daily at approximately the same time each day, and it must always be taken with food. The regulatory label does not specify whether the dose must be taken in the morning or at night.


Q: What if I forget to take a dose of Urorec?

The official guidelines provide specific instructions for when treatment has been stopped for more than a few days. If dosing is interrupted for this longer period, the labeling states that the recommended action is to restart treatment using the lower 4 mg dose once daily for the first week.


Q: Is there a maximum time a person can be on Urorec?

Urorec is intended for the long-term management of BPH symptoms. Official regulatory information notes that the safety and efficacy data from formal clinical trials extend up to two years of continuous treatment.


Q: What is retrograde ejaculation, and is it common with Urorec?

Retrograde ejaculation is a side effect acknowledged in regulatory documents, describing the phenomenon where semen travels backward into the bladder instead of being released externally during orgasm. Official information indicates this is a very common side effect with Urorec.


Q: Can Urorec affect fertility in men?

Official warnings note that Urorec treatment may lead to ejaculatory disorders, which refers to a decrease in the amount of semen released during orgasm. Because of this, the condition may temporarily affect male fertility. This effect is generally known to disappear after Urorec is stopped.


Q: Is Urorec available over the counter in any country?

Urorec (Silodosin) is classified as a prescription-only medicine in all markets where it is officially approved, including the European Union, the United States, Canada, and Australia.


Q: What is the general patient expectation for symptom relief with Urorec?

Official clinical trial results describe that Urorec demonstrated a difference in BPH symptoms compared to a placebo. Relief is measured by a reduction in the symptom score and an increase in the maximum urinary flow rate, with these changes typically being observed after 12 weeks of starting therapy.


Q: Does Urorec cause fatigue or tiredness?

Official documentation summarizing adverse reactions in clinical trials does not list fatigue or tiredness as a common (occurring in 1% or more of patients) or very common side effect.


Q: What evidence exists about Urorec's impact on bladder storage symptoms?

Clinical trials for Urorec specifically tracked the improvement of both voiding symptoms (related to flow) and storage symptoms (related to how the bladder holds urine). The official studies measured these changes using the relevant sub-scores of the International Prostate Symptom Score (IPSS).


Q: What is the 'postural hypotension' risk mentioned in official documents for Urorec?

Postural hypotension (also called orthostatic hypotension) is a common risk associated with Urorec. This phenomenon is a drop in blood pressure that occurs when an individual stands up from a seated or lying position, which can cause light-headedness or dizziness.


Q: Is it okay to use certain over-the-counter pain relievers while taking Urorec?

Regulatory information indicates that the concomitant use of Urorec with Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), a class that includes many over-the-counter pain relievers, may decrease the effects of Urorec due to pharmacodynamic antagonism.


Q: What should a patient tell their doctor before starting Urorec?

The official safety warnings state that conditions like low blood pressure, severe kidney or liver problems, or plans for cataract surgery should be discussed with a healthcare provider. The product labeling also notes that a physician examination to rule out the presence of prostate carcinoma is required before starting therapy.


Q: Does Urorec cause weight gain?

Based on the official clinical trial experience documented in regulatory materials, weight gain is not listed as a reported side effect of Urorec.


Q: What should I do if I experience a persistent headache while taking Urorec?

Headache is listed as a commonly reported adverse reaction in the clinical trials of Silodosin (the active ingredient in Urorec). Official safety information should be consulted regarding persistent adverse reactions.


Q: Are there different restrictions on who can use Urorec in Europe versus the US?

The primary contraindications for Urorec, such as use with severe kidney or liver impairment and strong CYP3A4 inhibitors, are consistent between the US FDA label and the European EMA Summary of Product Characteristics. However, minor variations in specific warnings or guidance may exist across regional regulatory documents.


Q: Is Urorec intended for men with mild or severe BPH symptoms?

Clinical studies have demonstrated effects on BPH symptoms across a range of severities, including men experiencing moderate and severe Lower Urinary Tract Symptoms (LUTS) related to BPH. The official evidence supports its use across this patient population.

How should Urorec be stored and disposed of?

How to Store and Dispose of Urorec?

Regulatory product information defines strict conditions for storing Urorec hard capsules to maintain product stability over the 2-year shelf-life.

Official Storage Requirements

Condition Regulatory Mandate
Temperature Must not be stored above 30 C (some regional limits advise below 25 C).
Protection Must be kept out of the sight and reach of children. Must be protected from light and moisture.
Packaging Must remain stored in the original package (blister and carton).

Official Disposal Rules

To manage unused or expired medicine, the product must be disposed of in accordance with local requirements. Official product characteristics state no special requirements are necessary, deferring to local pharmaceutical collection guidelines for proper waste management. Medicines should not typically be discarded into household trash or wastewater.

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

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