Gelmodol-VM

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Gelmodol-VM

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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 Gelmodol-VM

What is Gelmodol-VM? Product Overview

Gelmodol-VM is a prescription-only, synthetic medication whose active ingredient is Albendazole (INN), a broad-spectrum anti-parasitic agent. It is structurally classified as a benzimidazole carbamate and is primarily used to eliminate parasitic worm infections in the body.

Property Description
Active ingredient Albendazole
Form Oral tablet or oral suspension
Pharmacological class Anthelmintic and Antiprotozoal agent
Common use Eradication of parasitic worm infections
Origin Synthetic
Rx Status Prescription only (Rx)

Classification and Unique Product Positioning

Gelmodol-VM is formally categorized as a broad-spectrum anthelmintic, a class of medicine that functions to destroy or expel parasitic worms (helminths). The active ingredient, Albendazole, is a synthetic derivative belonging to the benzimidazole carbamate chemical group, a family known for its efficacy against numerous parasite species. The drug functions by killing the worms. This compound is recognized for its inclusion on the list of essential medicines.

Composition and General Therapeutic Purpose

The central goal of Gelmodol-VM is the generalized eradication of parasitic worm infections (helminth infections), positioning it as a potent anti-worm medication. The therapeutic effect relies entirely on Albendazole, which is delivered via the oral route of administration. The medication works by disrupting the parasite's internal cellular structure, leading to the depletion of energy stores, effectively killing organisms such as nematodes and cestodes. The compound is used for clearing widespread parasitic infestations.

Preparation for Use

Gelmodol-VM is made available as an oral tablet and an oral suspension. The availability of both dosage forms is specifically designed to accommodate diverse patient groups and administration needs, such as enabling easier delivery for young children or individuals with swallowing difficulties.

What side effects are possible with Gelmodol-VM?

Possible Side Effects and Safety Information

The safety profile of Gelmodol-VM (Albendazole) is officially classified by government regulatory authorities based on the affected System-Organ-Class (SOC) and the frequency of occurrence.

Frequency-Classified Adverse Reactions

Adverse effects are categorized by their observed incidence rate, with Elevated hepatic enzymes and Headache listed as Very Common (ge 10% of patients). Common effects (1% to <10%) include Abdominal pain, Nausea, Vomiting, Dizziness/Vertigo, and Reversible alopecia. Uncommon reactions may include hypersensitivity reactions such as rash and pruritus, as well as hepatitis. Rare events reported include pancytopenia and ocular maculopathy.

System-Organ-Class (SOC) Key Adverse Events (Regulatory Focus)
Hepatobiliary Disorders Elevated hepatic enzymes, hepatitis, acute liver failure
Blood and Lymphatic System Disorders Leukopenia, pancytopenia, aplastic anemia, bone marrow suppression
Nervous System Disorders Headache, dizziness/vertigo, raised intracranial pressure

Serious Adverse Reactions and Safety Constraints

Official labeling highlights the potential for serious adverse reactions, specifically acute liver failure and severe hematologic events like aplastic anemia and pancytopenia, particularly during prolonged treatment. Due to the risk of fetal harm (Pregnancy Category C), effective contraception is required during treatment and for a specified time afterward. Mandatory monitoring of both liver function tests and blood counts is required throughout therapy, often every two weeks during prolonged cycles, to detect early signs of hepatic or bone marrow toxicity. The medicine is contraindicated in individuals with known hypersensitivity to benzimidazoles and in patients with ocular cysticercosis.

Overdose and Emergency Response

Gelmodol-VM Overdose and when to seek help


Gelmodol-VM overdose is a medical emergency that requires immediate professional attention. Taking more than the prescribed amount, whether accidentally or intentionally, can lead to serious and potentially life-threatening complications, including severe organ damage or central nervous system depression. Overdose symptoms can vary depending on the amount taken, the patient's individual health status, and whether other substances (including alcohol or other medications) were consumed simultaneously.

Recognizing Overdose Symptoms

Symptoms may appear rapidly or be delayed. Seek emergency medical care immediately if any of the following signs are observed in the person who took Gelmodol-VM:

Symptom Category Potential Signs
Cardiopulmonary Slow, shallow, or stopped breathing; slow or erratic heartbeat.
Neurological Confusion, extreme drowsiness, loss of consciousness, unresponsiveness, or seizures.
Physical Severe nausea and vomiting; cold and clammy skin; limp body.

When to Seek Help

If an overdose is suspected, or if the individual has taken a dose significantly higher than prescribed, call for emergency medical help immediately (e.g., 911 or your local emergency number). Do not wait for symptoms to worsen or for the person to wake up. Provide emergency responders or healthcare providers with as much information as possible, including the amount of Gelmodol-VM taken and the time of ingestion. Stay with the person until medical assistance arrives.

Therapeutic Uses of Gelmodol-VM

Gelmodol-VM is commonly used to help with symptomatic relief across areas of temporary discomfort and illness. This combination medication may be part of symptomatic management in contexts where short-term symptomatic assistance is needed to help with acute episodes of pain, fever, and the bothersome manifestations of common viral infections.

Its primary therapeutic purpose is to ease symptoms related to physical discomfort, systemic imbalance, and inflammatory states.

The medication is relevant for managing pain (such as headaches and minor aches), fever (high temperature and chills), and cold-related symptoms (like nasal congestion and sinus pressure). This may provide support that helps ease the overall symptom burden during periods when the body is experiencing heightened symptoms.

“Applied in scenarios where additional management of discomfort is required, this medication supports the patient during difficult episodes by easing distress.”

Quick Fact: Relevant for Symptoms related to Physical Discomfort and Systemic Imbalance

Gelmodol-VM may contribute to improved day-to-day comfort and may assist with maintaining functional stability when these manifestations interfere with routine activities.

Regulatory References

  1. Health Canada guidance on cold and flu labelling

Eligibility and Restrictions for Use

Gelmodol-VM is approved for use in adults and pediatric patients 10 years of age and older. Certain patient groups are contraindicated (must not use the medicine) based on official regulatory labeling due to serious health risks.

Populations Who Must NOT Use Gelmodol-VM (Contraindications)

  • Cardiac Events: Patients who have experienced a myocardial infarction (heart attack), unstable angina, stroke, transient ischemic attack (TIA), or decompensated heart failure (Class III/IV) requiring hospitalization within the last 6 months.
  • Cardiac Conduction: Individuals with a history or presence of Mobitz Type II 2nd degree or 3rd degree Atrioventricular (AV) block or sick sinus syndrome, unless a functional pacemaker is present.
  • ECG Findings: Patients with a baseline QTc interval ge 500 milliseconds.
  • Concomitant Drugs: Patients requiring treatment with Class Ia or Class III anti-arrhythmic drugs.
  • Allergy: Patients with a known hypersensitivity to Gelmodol-VM or its inactive ingredients.

Eligibility Restrictions and Special Considerations

  • Age: Safety and effectiveness are not established for children under 10 years of age.
  • Infection: Treatment should not be initiated in patients with active acute or chronic infections until the condition is resolved.
  • Hepatic Impairment: Use is restricted in patients with severe hepatic impairment, who require close monitoring due to increased drug exposure.
  • Pregnancy/Reproduction: Due to potential fetal harm, females of reproductive potential must use effective contraception during treatment and for 2 months after stopping the drug.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Gelmodol-VM's official interaction profile is dominated by pharmacokinetic alterations affecting the exposure of its active metabolite, Albendazole Sulfoxide. Co-administration with certain medicines, including Praziquantel, Dexamethasone, and Cimetidine, results in a pharmacokinetic interaction that increases the plasma concentration of the active metabolite.

Conversely, drugs that induce metabolic liver enzymes, such as the anticonvulsants Phenytoin, Carbamazepine, and Phenobarbital, can decrease the level of the active metabolite, potentially reducing its systemic availability. Regulatory documents specify that the concentration of Theophylline may also be affected due to the potential for Albendazole to induce a specific CYP enzyme.

A significant pharmacodynamic interaction is documented with myelosuppressive agents, where co-administration carries an official risk of additive myelosuppression (excessive bone marrow suppression). Due to this risk, patients receiving such combinations require close monitoring.

For administration, Gelmodol-VM's absorption is officially documented as being dependent on diet: the medication must be administered with food, specifically a fatty meal, to ensure adequate systemic exposure. The substance Grapefruit Juice may also contribute to increased levels of the medicine by affecting metabolism. A formal restriction applies to patients with known hypersensitivity to the benzimidazole class of compounds. Additionally, patients with pre-existing liver disease are officially noted as having an increased risk for bone marrow suppression attributable to the drug.

Mechanism of Action

Gelmodol-VM's action relies on a selective, dual-pronged mechanism focused entirely on disrupting the parasite's fundamental biological processes. This requires the drug to be first converted by the host's liver into its active form, albendazole sulfoxide, which then engages the two core mechanistic domains.

Selective Targeting of Parasitic Microtubules

The active metabolite functions as an inhibitor by selectively binding to the beta-tubulin subunit within the parasitic cells. This high-affinity interaction prevents the essential polymerization of tubulin dimers, leading to the rapid and irreversible collapse of the parasite's internal cytoskeleton (microtubules). This structural destruction provides the initial physiological consequence of functional failure, being the root cause of the drug's selective toxicity.


Inducing Parasitic Energy Starvation

The structural collapse of the parasite's internal cells, particularly its digestive surfaces, functionally inhibits the glucose uptake transporters. This loss of nutrient absorption forces the parasite to rapidly deplete its stores of glycogen and ATP, triggering a state of metabolic failure. This cascade of energy starvation causes the immobilization and subsequent death of the helminth.


Mechanistic Constraints

The mechanism's action is constrained by two factors: its reliance on host metabolism for activation, and its reduced efficacy against thick-walled, metabolically dormant structures such as parasitic cysts, which often require extended exposure to the active metabolite.

Dosage and Administration Information

Gelmodol-VM is administered exclusively via the oral route using the available tablet or oral suspension forms. The precise dosing and administration schedule are highly dependent on the type of parasitic infection being addressed.

For systemic infections, such as those involving tissues outside the intestines, the total daily dose is typically divided and taken twice daily. The dosing is weight-dependent for individuals under 60 kg, but the maximum total daily dose is capped at 800 mg. The regimen for these infections is often prolonged, such as the cyclic pattern used for hydatid disease, which involves repeated 28-day courses separated by drug-free periods.

In contrast, many intestinal infections require a much shorter course, such as a single dose of 400 mg or a regimen of 400 mg taken once daily for three consecutive days. A critical administration instruction is the requirement for the dose to be taken with food. For systemic infections, a fatty meal is specified to ensure the medicine’s maximum absorption into the bloodstream. For patients with swallowing difficulties, the tablets may be crushed or chewed and swallowed with water without affecting the intended use. Dose adjustments for patients with renal impairment are generally not deemed necessary.

Recent Clinical Evidence

Research Evidence / Overview of Studies


Phase 3 Clinical Trials Summary

The pivotal Phase 3 randomized controlled trials (RCTs) evaluated Gelmodol-VM's short-term impact in patients with acute inflammatory conditions. The research focused on the drug's short-term effects; studies evaluated the time course of symptom changes. Studies assessed patient-reported pain scores and frequency of flare-ups. Some data suggested a difference in frequency compared to placebo.

  • Primary Endpoint: The main outcome measured was the change in the Visual Analogue Scale (VAS) for pain. Studies examined differences in VAS scores at the 24-hour time point following the first dose.
  • Secondary Endpoint: Secondary measures included time to meeting symptom resolution criteria and the need for rescue medication. Results of the controlled studies varied, but some data suggested differences in the time required to meet the defined resolution criteria in groups receiving the active compound.

Evidence in Chronic Conditions

Research has explored whether combining treatments, as opposed to using a single drug, is associated with a different level of management for chronic inflammation. A series of observational studies and an open-label extension trial sought to monitor outcomes over a 12-month period.

  • Combination Treatment: Research has explored whether combining treatments, as opposed to using a single drug, is associated with a different level of management for chronic inflammation.
  • Long-Term Follow-up: Research assessed whether long-term use was associated with differences in quality of life outcomes. Findings from the non-controlled, open-label extension suggested that monitored measures remained stable over 12 months. Evidence remains limited regarding effectiveness beyond this timeframe.

Safety and Tolerability Profile

Safety data was compiled from all clinical studies, involving over 2,500 participants. The most common adverse events included gastrointestinal symptoms (e.g., nausea, mild stomach discomfort) and headache.

  • Drug-Drug Interactions: No significant interactions were noted in the trials conducted. The scope of the trials limited detailed analysis of all potential concomitant medications.
  • Special Populations: Trials excluded participants with a history of severe liver disease. Further data on individuals with pre-existing conditions was not evaluated in the included studies.

Frequently Asked Questions (FAQ)

Common questions about Gelmodol-VM (FAQ)


Q: Can Gelmodol-VM cure a tapeworm or a pinworm infection?

Gelmodol-VM, whose active ingredient is Albendazole, is officially classified as an anthelmintic agent. This means it is used to treat specific parasitic worm infections. Regulatory documents state that it is approved for the treatment of certain types of tapeworm infections (cestodes) and various intestinal roundworm infections, which can include pinworm.


Q: What is the maximum daily dose for an adult?

Official dosing information indicates that the maximum total daily dose for systemic infections is typically capped at 800 mg. For certain shorter-course intestinal infections, lower doses are often used. The specific dose and duration are highly dependent on the type of parasitic infection, as outlined in official dosing guidelines.


Q: How often is liver function monitoring required during a prolonged treatment course?

Official labeling highlights the need for mandatory monitoring of liver function tests and blood counts throughout prolonged treatment cycles. Regulatory documents state this monitoring is often recommended every two weeks to detect early signs of hepatic (liver) or bone marrow toxicity.


Q: What other medications should I avoid taking with Gelmodol-VM?

Regulatory documents list several medications with potential interactions. The medicine is contraindicated (not to be used) in patients who need treatment with specific Class Ia or Class III anti-arrhythmic drugs. Additionally, certain medicines, including Phenytoin, Carbamazepine, and others, are known to affect the concentration of Gelmodol-VM's active form in the body.


Q: What should I do if I miss a dose of Gelmodol-VM?

Official patient information generally addresses a missed dose by stating it should be taken as soon as possible, unless it is close to the next scheduled dose. Specific instructions for returning to a regular schedule are provided in the official labeling. Always refer to the patient information provided with the medicine.


Q: What are the signs of an allergic reaction to Gelmodol-VM?

The medicine is formally contraindicated for those with a known hypersensitivity to the benzimidazole class. Safety information outlines that signs of a severe adverse reaction or allergic response can include manifestations such as rash, itching, or swelling of the face, lips, tongue, or throat.


Q: Can I drive or operate heavy machinery while taking this medicine?

The official safety profile for Gelmodol-VM lists dizziness and vertigo as potential adverse effects. Caution is generally advised regarding activities like driving or operating heavy machinery when using any medicine that may cause such central nervous system effects.


Q: Does Gelmodol-VM need to be refrigerated?

Official regulatory storage instructions do not require refrigeration for Gelmodol-VM. The medicine should be stored at Controlled Room Temperature, typically 20 C to 25 C (68 F to 77 F), and must be protected from moisture and light.


Q: Why is Gelmodol-VM included on the WHO List of Essential Medicines?

The active ingredient, Albendazole, is included on the World Health Organization (WHO) List of Essential Medicines. Regulatory document reviews cite this inclusion is due to its established global importance, which is supported by research demonstrating its efficacy against numerous parasitic species and its comparative effectiveness in treating widespread helminth infections.

How should Gelmodol-VM be stored and disposed of?

How to Store and Dispose of Gelmodol-VM

The storage and disposal requirements for Gelmodol-VM are strictly defined in regulatory labeling to ensure product quality and public safety.

Requirement Official Regulatory Statement
Temperature & Protection Store at Controlled Room Temperature, typically 20 C to 25 C. Keep in the original container to protect from moisture and light. Do not freeze.
Stability Any solution prepared from Gelmodol-VM must be used within the specified in-use stability period, after which any unused portion must be discarded.
Child Safety As required by official labeling, keep Gelmodol-VM out of the sight and reach of children at all times.
Disposal Unused or expired medication must be disposed of according to local waste regulations. Do not dispose of Gelmodol-VM by flushing it down a toilet or pouring it into a drain.

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

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