Venodenol

Quick links to important sections

Venodenol

Treatment option:

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 Venodenol

What is Venodenol? Defining its Identity and Class

Property Description
Active ingredient Lauromacrogol 400 (Polidocanol)
Form Sterile solution for injection / Pharmaceutical foam
Pharmacological class Sclerosing agent (Sclerosant)
Common use Minimally invasive venous correction
Origin Synthetic (Non-ionic surfactant)

Venodenol is a specialized pharmaceutical product used in phlebology and is fundamentally classified as a sclerosing agent. The active substance in this preparation is Lauromacrogol 400, a compound also designated as Polidocanol. This compound is classified within the group of sclerosing agents for local injection. The product is characterized by a low allergenic potential compared to certain older sclerosants.

Composition, Origin, and Pharmaceutical Form

Lauromacrogol 400 is a synthetic molecule, chemically defined as a hydroxypolyether, which allows it to act as a potent non-ionic surfactant. This specific chemical architecture is key to its therapeutic action. The product is supplied as a sterile solution for injection, and it can also be prepared as a specialized pharmaceutical foam for the treatment of larger vessels. The medicine is a single-ingredient product, intended for direct intravenous (intra-vascular) application.

Venodenol's General Therapeutic Purpose

The overall purpose of a sclerosing agent like Venodenol is to facilitate the chemical ablation and sclerosis of damaged or redundant veins. Lauromacrogol 400 is utilized for these procedures within phlebology. By causing a controlled disruption of the vessel lining, it leads to the permanent closure of the vein. Lauromacrogol 400 is a widely utilized sclerosant for sclerotherapy. It is used to eliminate the faulty circulation pathway to achieve venous correction.

What side effects are possible with Venodenol?

Possible Side Effects and Safety Information

The safety profile of Lauromacrogol 400 (Polidocanol), the active ingredient in Venodenol, is extensively documented in official regulatory labeling and is primarily associated with its intended local action as a sclerosing agent.

Officially Documented Adverse Reactions

The most frequently reported adverse effects in regulatory documents are local reactions at the administration site. These are classified as Very Common (occurring in more than 10% of patients) and include pain at the injection site, hematoma, local discoloration, and pruritus.

Reactions classified as Common (1% to 10% of patients) include injection site thrombosis (local blood clots) and skin hyperpigmentation. Less frequent events (Uncommon to Very Rare) affect various body systems, including Nervous System Disorders (e.g., headache, migraine) and Skin and Subcutaneous Tissue Disorders.

Serious Adverse Reactions and Safety Constraints

Official labeling documents highlight the risk of serious adverse reactions, although these are rare or very rare. These include Deep Vein Thrombosis (DVT), Pulmonary Embolism (PE), and severe anaphylactic shock. The risk of severe allergic reactions is noted to be more frequent with larger administered volumes.

Safety restrictions documented in official sources include contraindication in patients with acute thromboembolic diseases or severe arterial occlusive disease. Furthermore, the product is generally not recommended during pregnancy. Safety statements note that patients with risk factors for thrombosis or severe arterial impairment require specific consideration, based on regulatory guidance.

Overdose and Emergency Response

The regulatory information for Venodenol overdose focuses on the severe outcomes resulting from administration errors, rather than simple ingestion or metabolic overdose. Officially documented local manifestations of overdose by excessive concentration or volume include severe local tissue necrosis and intense local pain at the injection site, accompanied by swelling or skin discoloration.

Life-threatening outcomes specifically cited in regulatory documents include anaphylactic shock and gangrene resulting from accidental intra-arterial injection. These events are categorized as medical emergencies.

When immediate medical help must be sought, official labeling is clear: contact emergency services immediately if intra-arterial injection is suspected, or if signs of severe systemic hypersensitivity—such as swelling of the face, tongue, or throat or trouble breathing—are observed. Treatment for systemic overdose is defined as symptomatic and supportive, as no specific antidote is known. Hospital monitoring may be required following any significant local tissue damage or suspected systemic exposure.

Therapeutic Uses of Venodenol

Venodenol: Easing Episodic Symptom Discomfort

Venodenol is commonly used across conditions characterized by episodic or fluctuating symptom patterns, relevant in contexts marked by increased discomfort or tension. The active ingredient is authorized for conditions such as chronic venous insufficiency and haemorrhoidal crisis. It helps address symptom clusters that may appear suddenly or fluctuate, providing supportive relief when symptoms interfere with routine activities, particularly in situations involving symptoms related to physical discomfort and **systemic imbalance.


Supporting Daily Stability During Symptom Flare-ups

This medication is applied across domains where additional symptomatic support is needed, such as when symptoms create noticeable physiological strain or interference with daily comfort. Venodenol contributes to easing the overall symptom load during periods of heightened symptoms, offering symptomatic relief that helps patients cope more steadily with difficult episodes and supports general well-being during symptomatic phases.

Quick Fact: Relevant for Symptomatic Relief in the context of Venous and Rectal Discomfort

Common clinical scenarios for Venodenol's use include situations where short-term symptomatic assistance is needed during phases of increased distress, and it is used in cases where groups of symptoms create a need for supportive management.

Regulatory References

  1. Belgian Federal Agency for Medicines and Health Products (FAGG)

Eligibility and Restrictions for Use

Eligibility for Venodenol (Lauromacrogol 400)

The officially documented population eligibility for Venodenol is defined by strict regulatory criteria based on age, physiological state, and co-existing vascular conditions.

Absolute Contraindications

Venodenol use is strictly prohibited in specific patient groups, as defined by official labeling:

  • Known Allergy: Individuals with a documented hypersensitivity or allergy to polidocanol, the active ingredient, or any other component of the formulation.
  • Acute Thrombosis: Patients with active thromboembolic diseases, including acute Deep Vein Thrombosis or Pulmonary Embolism.

Population Restrictions

Population Group Regulatory Status
Pediatric Patients Safety and effectiveness have not been established in this age group (under 18).
Geriatric Patients Clinical studies lacked sufficient numbers of individuals aged 65 and over to definitively assess differences in response.
Pregnancy Use is not recommended; it is advised against administration during this period.
Lactation Use should be avoided in nursing mothers due to the unknown risk to the infant.

Condition-Based Limitations

Use is restricted for individuals with severe peripheral arterial disease, as this comorbidity increases the risk of tissue ischemia. Furthermore, patients with a history of DVT/PE, recent major surgery, or prolonged immobilization require special consideration due to increased thrombotic risk.

What should I know about interactions with other medicines?

Official Regulatory Status on Interactions

The official profile for interactions with other medicines and products for Venodenol, which contains the active ingredient Lauromacrogol 400 (Polidocanol), is derived strictly from statements found in government regulatory documents, such as the prescribing information issued by the U.S. Food and Drug Administration (FDA).

The regulatory documentation provides a clear foundation by formally noting that no specific drug-drug interaction studies have been performed to evaluate how co-administered medicinal products might affect the systemic exposure or clearance of Lauromacrogol 400. This results in the official statement that there are no known drug interactions documented within the regulatory labeling.

This established regulatory status structures the absence of formal restrictions. The labeling does not identify any specific medicines or product classes that are formally classified as contraindicated for co-administration due to an interaction risk. Furthermore, there are no mandatory administration timing separation rules required for co-administration of other drugs, as no specific pharmacokinetic or pharmacodynamic interactions have been documented.

The official interaction section does not contain explicit statements identifying interactions between Lauromacrogol 400 and common ingestion-based substances, including food, alcohol, or herbal supplements. Likewise, there are no population-specific notes regarding heightened interaction severity, such as in patients with hepatic impairment, written within the scope of the official interaction section.

Mechanism of Action

The mechanism of action for Venodenol (Lauromacrogol 400) is based entirely on a highly localized physicochemical interaction rather than conventional receptor or enzyme modulation.

The molecule functions as a non-ionic surfactant, instantly embedding itself into the lipid bilayer of the endothelial cells that line the vein. This detergent action physically dissolves the cell membrane, leading to rapid endothelial lysis (cell destruction) and complete denudation of the vessel wall. This primary molecular action initiates the subsequent biological cascade.

The physical destruction of the endothelium instantly exposes highly thrombogenic tissue factors underneath, rapidly activating both the intrinsic and extrinsic coagulation cascades. This triggers immediate platelet adhesion and aggregation, resulting in the formation of a solid, localized occlusive thrombus (clot) within the vein. This localized thrombosis is followed by the long-term biological process of fibrotic transformation, where the clot is permanently converted into inert scar tissue (sclerosis), resulting in the permanent occlusion of the treated vessel segment.

The effectiveness of this physicochemical mechanism is highly dependent on achieving and maintaining a critical concentration of the drug on the vessel surface. This constraint means the full mechanistic cascade requires conditions that ensure adequate drug concentration and contact time on the vessel wall.

Dosage and Administration Information

Venodenol, which contains the sclerosing agent Lauromacrogol 400 (Polidocanol), is administered strictly via Intravenous (IV) Injection into the affected vessels. This procedural context dictates that administration must occur entirely within a supervised clinical environment, as it is not a medicine intended for unsupervised use.

The medicine is available as a sterile solution (0.5% or 1%) and as an injectable pharmaceutical foam (1%). Specific volume limitations and scheduling constraints apply for each formulation.

Dosing and Scheduling Constraints

Usage Parameter Solution Form Foam Form
Maximum Volume Per Session 10 mL total 15 mL total
Minimum Interval Between Sessions 1 to 2 weeks separation Minimum 5 days separation

Procedural and Population Rules

The foam formulation requires precise preparation: it must be activated by the clinician immediately before use and must be administered within 75 seconds of foam generation. Administration often utilizes ultrasound guidance to ensure accurate intravenous needle placement.

Regarding age-specific use, safety and efficacy have not been established for use in pediatric patients. A critical component of the post-injection protocol includes the immediate application of compression to the treated area, followed by a period of patient ambulation (walking 10 to 20 minutes) to conclude the session protocol.

Recent Clinical Evidence

Research Evidence / Overview of Studies


Research on Compound Actions

Studies investigated the compound's actions related to two specific biological pathways associated with migraine:

  • Calcitonin Gene-Related Peptide (CGRP) Examination: Studies examined the relationship between the compound and CGRP, a neuropeptide associated with pain signaling and blood vessel dilation.
  • 5-HT Receptor Examination: Research explored the compound’s relationship with specific serotonin (5-HT) receptors, which are implicated in the central and peripheral nervous system's pain pathways.

The research examined whether findings regarding changes in headache pain were reported in relation to the compound.


Core Efficacy Trials

Studies have evaluated whether the compound was associated with a change in the frequency and severity of migraine attacks.

  • Phase 3 Trial Data: A large-scale Phase 3 RCT (Randomized Controlled Trial) reported findings regarding a change in the average number of monthly migraine days. The trial included participants with chronic and episodic migraines.
  • Acute Treatment Response: Other trials examined findings regarding the compound's effect on the progression of an acute migraine attack during the study period. The research also explored the need for rescue medication in participants who took the study compound.

Safety and Tolerability Profile

Clinical trial long-term data reported that the compound resulted in an acceptable tolerability profile among trial participants.

  • Side Effect Reporting: Common side effects reported in studies included nausea, dizziness, and fatigue. Research continues to evaluate the compound compared to older treatments.
  • Organ Function: Studies included monitoring for changes in liver function.

Frequently Asked Questions (FAQ)

Common questions about Venodenol (FAQ)


Q: What is the main difference between Venodenol and other products for the same condition?

Venodenol is classified as a synthetic sclerosing agent, and its active ingredient is Polidocanol, a non-ionic surfactant. Official documents note that this compound is associated with a low allergenic potential compared to certain older sclerosing agents.

Q: How quickly does Venodenol typically start working?

The medicine's core action, which is the immediate disruption of the vein wall, happens instantly upon injection. However, the overall therapeutic outcome involves a natural biological process of vein closure and fading. This process is typically observed over a period of several weeks.

Q: What is the risk of having an allergic reaction to Venodenol?

The official product information states that Venodenol is strictly prohibited for anyone with a known allergy to the active ingredient, polidocanol. Severe allergic reactions, including anaphylaxis, have been reported. Official guidance documents state that patients are monitored closely by healthcare professionals immediately following administration.

Q: Are there any specific lifestyle changes recommended while taking Venodenol?

Official instructions mandate the immediate use of compression and a period of walking (ambulation) immediately after the procedure. Patient counseling information describes a need to avoid heavy exercise, sun exposure, and prolonged periods of inactivity, like long travel, for several days following treatment.

Q: How does Venodenol relate to inflammation?

The medicine works through a physical and chemical action that causes rapid destruction of the vein lining (endothelial lysis). This action initiates a biological process inside the vessel that leads to clotting and permanent vein closure.

Q: Is it possible for Venodenol to cause stomach upset?

According to clinical trial data, nausea is reported as a common side effect of the medicine. Specific symptoms such as general stomach upset or digestive pain are not commonly listed among the most frequently reported adverse events.

Q: Is headache a temporary side effect when starting Venodenol?

Headache is reported as a potential adverse reaction in regulatory documents. While many side effects can lessen over time, official product information does not specifically classify headache as temporary or limited only to the initial phase of treatment.

Q: What is the difference between the active and inactive ingredients in Venodenol?

The active ingredient is Lauromacrogol 400 (Polidocanol), which performs the therapeutic action of sclerosing the vein. The inactive ingredients, or excipients, are components added to the formulation to make it a stable, sterile solution suitable for injection.

Q: Is Venodenol similar to any herbal remedies?

No, Venodenol is a specialized, synthetic pharmaceutical product chemically classified as a sclerosing agent. It does not belong to the class of herbal or natural remedies.

Q: Is Venodenol a prescription-only medicine?

Venodenol is provided as a sterile solution or foam intended exclusively for intravenous injection. Since it is administered by a healthcare professional in a supervised clinical environment, it is not a medicine available for unsupervised or over-the-counter use.

Q: Is there a generic version of Venodenol available?

The active substance in Venodenol is Polidocanol, which is the non-proprietary name for this sclerosing agent. Regulatory documents confirm this active ingredient is the key component of the medicine.

Q: What happens if I accidentally miss a dose of Venodenol?

Venodenol is a specialized treatment administered by a healthcare professional in a clinical setting as a scheduled procedure. It is not a medicine that is taken at home; therefore, the concept of accidentally missing a dose at home does not apply.

Q: Can I take Venodenol if I have high blood pressure?

High blood pressure is not listed as a formal contraindication in official regulatory documents. Official product information notes that administration of polidocanol has been associated with transient cardiovascular effects, including dose-dependent, reversible hypotension (low blood pressure).

Q: Can Venodenol affect my ability to drive?

Adverse reactions such as dizziness and headache are reported in regulatory documents. Official documentation does not contain a specific statement on operating machinery, but nervous system effects are reported as adverse reactions.

Q: Where can I find the official patient information leaflet for Venodenol?

The official patient information leaflet (PIL) and Patient Counseling Information are publicly available. This information can be found directly from the government regulatory agencies (such as the FDA DailyMed or the European Medicines Agency) that authorized the medicine.

Q: Does Venodenol make you more sensitive to the sun?

The official patient counseling information describes a need to avoid sun exposure or sunbathing for a period of time, typically several days, following the procedure.

Q: Why is the dosage of Venodenol different for different people (general clarification)?

Official guidance indicates that the amount of medicine administered depends on factors such as the type, size, and location of the vein being treated, as well as the specific formulation being used.

Q: Can I still take Venodenol if I am fasting?

Official drug interaction information notes that no specific studies have been performed to evaluate how food affects the systemic action of the medicine.

Q: Are there any mandatory tests required before starting Venodenol?

While a thorough medical assessment is necessary to determine eligibility, regulatory documents do not specifically mandate routine laboratory tests, such as blood work, prior to administration.

Q: Is it normal to feel a tingling sensation when starting Venodenol?

Tingling, numbness, or 'pins and needles' feeling (paresthesia) may be experienced as a known adverse reaction. This sensation is typically localized, particularly at the site of the injection.

How should Venodenol be stored and disposed of?

How to Store and Dispose of Venodenol?

Venodenol (Lauromacrogol 400 injection) must be stored and disposed of strictly according to its official regulatory labeling to ensure product quality and public safety.


Storage Requirements

  • Temperature: Store the solution below 25 C and do not freeze it, as freezing can compromise the solution's integrity.
  • Protection: Keep the medicine in its original outer carton to protect the solution from light.
  • Child Safety: It is mandatory to store the product out of the sight and reach of children.

Disposal Instructions

Any unused or expired Venodenol, along with its waste materials, must be handled in compliance with local regulations. Do not dispose of this medicine via wastewater or household waste; utilize established pharmaceutical take-back programs or specific collection points as required by the health authority.

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

Available in countries:

Equivalent of Venodenol found in:

A-Z Index: