Quanox

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Quanox

Medically reviewed

Marina Burgos

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 Quanox

Property Description
Active ingredient Ivermectin
Form Oral tablets, Topical solution/lotion
Pharmacological class Anthelmintic, Antiparasitic agent (Macrocyclic lactone)
General purpose Elimination of parasitic infestations in humans
Origin Semi-synthetic (derived from Streptomyces avermitilis)

Quanox is a specific trade name for a medicine containing the essential active ingredient Ivermectin, which is primarily classified as an Anthelmintic and a broad-spectrum Antiparasitic agent. This compound is a semi-synthetic derivative belonging to the macrocyclic lactone class of drugs. Ivermectin's inclusion on the WHO Model List of Essential Medicines underscores its global recognition as a crucial medicine.

Quanox: Defining the Active Ingredient and Class

The core of Quanox is the active substance, Ivermectin, which is chemically derived from the avermectins, originally isolated from the soil bacterium Streptomyces avermitilis. As a single-ingredient product, its composition is characterized by Ivermectin's potent properties. The specific classification as a macrocyclic lactone is supported by pharmacological studies, recognizing its efficacy across a wide range of parasitic nematodes. Research indicates that the drug is recognized by the scientific community for its wide-ranging effectiveness against various invertebrate organisms.

What Type of Medicine is Ivermectin?

While Ivermectin is available generically, Quanox is often commercially presented as a topical solution or lotion for external applications, distinguishing it from common oral tablet-only brands. This form is intended to deliver the medicine directly to the skin surface. Regardless of the form, Ivermectin is only supplied as a single active substance. The choice between the oral or topical route of administration depends on the specific parasitic affliction. The topical solution utilizes a solvent base, while the oral tablet uses excipients to ensure proper delivery of the active Ivermectin substance.

The General Purpose of this Antiparasitic Agent

The fundamental purpose of Ivermectin is to eliminate or significantly reduce various parasitic organisms. Its utility is rooted in its selective mechanism: Ivermectin binds with high affinity to specific glutamate-gated chloride ion channels present in the nerve and muscle cells of susceptible parasites, but not in mammals. This selective binding means the medicine is designed to target the parasite’s nervous system without affecting the patient's. This action leads directly to the paralysis and eventual death of the invertebrate organism, providing a clear path to relief from parasitic affliction.

Regulatory References

  1. MedlinePlus Ivermectin, 2024

What side effects are possible with Quanox?

Possible Side Effects and Safety Information

The official safety profile for Quanox (Ivermectin) is based on regulatory classifications that organize adverse reactions by frequency and affected body system, as documented by authorities such as the U.S. Food and Drug Administration (FDA) and the European Medicines Agency (EMA).

Commonly observed reactions, as classified in official documents, include symptoms categorized under Gastrointestinal Disorders (nausea, vomiting, diarrhea, abdominal pain) and Nervous System Disorders (dizziness, somnolence). Reactions related to the skin and general well-being, such as pruritus (itching) and rash, are also frequently reported.

Classification System-Organ Class Examples
Common Gastrointestinal Disorders, Nervous System Disorders, Skin and Subcutaneous Tissue Disorders
Uncommon Transient laboratory changes (elevated liver enzymes), Asthenia

Serious adverse reactions are rare but specifically documented in regulatory labeling. These include severe, sometimes fatal, reactions such as the Mazzotti-like reaction (associated with parasitic death in onchocerciasis treatment), serious encephalopathy (brain disease) in patients with high Loa loa co-infection, and rare instances of hepatic injury/failure and severe cutaneous reactions (like Stevens-Johnson Syndrome).

Population-specific constraints include a contraindication for individuals with known hypersensitivity to Ivermectin or its excipients. Additionally, the drug's safety and effectiveness are generally not established in pediatric patients weighing less than 15 kg. The most severe reactions, such as the Mazzotti reaction, are noted to be most common following the first dose of treatment.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profile for Quanox (Ivermectin) overdose documents a range of clinical manifestations resulting from toxic exposure. Overdose risk is often associated with the ingestion of inappropriately high doses or highly concentrated non-human formulations, as described in government health advisories.

Category Official Regulatory Statement
Documented Overdose Presentations Clinical effects include gastrointestinal symptoms (nausea, vomiting, diarrhea) and initial central nervous system (CNS) effects such as headache, dizziness, and tremor. Cardiovascular effects, including hypotension and tachycardia, are also documented.
Severe/Life-Threatening Outcomes Toxic exposure is associated with severe CNS depression, which may progress to confusion, hallucinations, seizures, and coma, and has been associated with death.
Overdose Management No specific antidotal therapy is known. Management must be restricted to symptomatic and supportive treatment and close patient monitoring.

Required Emergency Actions

Immediate medical attention is necessary upon suspicion of overdose. Individuals must seek help immediately if experiencing any symptoms. Emergency services must be called if the affected person has collapsed, experienced a seizure, has trouble breathing, or cannot be awakened. It is also required to contact a poison control helpline for specialized medical advice, as hospitalization may be necessary for observation and intensive supportive care.

Therapeutic Uses of Quanox

What Quanox Treats: Main Uses and Benefits

Quanox (Ivermectin) is generally used to help with infections caused by certain internal and external parasites and is applied across domains where additional symptomatic support is needed. The indications for this medicine are relevant in contexts marked by increased discomfort or tension. It is commonly used across conditions presenting with systemic or localized discomfort.


Management of Internal Discomfort

This domain covers conditions of the intestinal tract where the medicine is applied in addressing associated symptomatic discomfort. It helps ease symptom clusters that may become intense or disruptive, such as those related to physical discomfort in the abdomen. This supports patients during episodes of heightened discomfort and assists with maintaining functional stability. It is commonly used when short-term symptomatic assistance is needed to help with symptoms that interfere with daily functioning.


Supportive Care for Irritative and Systemic Symptoms

Quanox is relevant in conditions characterized by periods of heightened symptoms. It is also relevant in conditions involving inflammatory or irritative processes, such as those presenting with external parasitic manifestations. The use is applied in addressing associated symptoms, and this supportive relief provides support that helps ease the overall symptom burden during symptomatic phases.


Quick Fact: Support for Symptoms of Heightened Physiological Activity

Eligibility and Restrictions for Use

Eligibility Map: Who Can and Cannot Use Quanox (Ivermectin) — Official Regulatory Information


Eligibility Scope

Category Official Regulatory Statement
Populations for whom use is allowed Individuals 15 kg or more for the oral tablet, and 6 months of age or older for the topical lotion.
Populations for whom use is not recommended Pregnant women are not recommended for treatment. Nursing mothers should only use if the risk of delayed treatment to the mother outweighs the possible risk to the newborn.
Populations for whom use is contraindicated Patients with a known hypersensitivity or allergy to the active substance, Ivermectin, or to any of the product's excipients.
Age-related eligibility rules Oral Ivermectin's safety and effectiveness have not been established in children weighing less than 15 kg.
Condition-specific eligibility rules Hepatic (liver) impairment warrants caution, as the drug is metabolized in the liver and relevant pharmacokinetic data are limited.
Pregnancy and lactation eligibility status Pregnancy: Use is generally not recommended or considered contraindicated. Lactation: Use is conditional on a risk-benefit assessment for the mother vs. the infant.
Eligibility-related restrictions Individuals exposed to Loa loa-endemic areas must undergo pretreatment assessment and careful follow-up.

Eligibility Classifications (High-Level)

Classification Type Official Regulatory Statement
Eligibility severity classification Contraindicated (for hypersensitivity) and Use Not Established (for children < 15 kg).
Regulatory basis Prescribing Information from the U.S. FDA, Summary of Product Characteristics (SmPC) from the EMA, and national health authorities.
Eligibility-context constraints Use in immunocompromised patients may require repeated courses of therapy.

Resulting Eligibility Structure

Official eligibility statements:

  • The medicine is contraindicated in patients with a history of hypersensitivity to Ivermectin.
  • Safety and effectiveness of the oral formulation have not been established in children weighing less than 15 kg.
  • Use is not recommended in pregnant women due to insufficient human safety data.
  • Patients exposed to Loa loa are subject to special measures and careful follow-up prior to treatment.

Connection to the overall eligibility profile: Official regulatory documents define the population eligible for Quanox by establishing clear contraindications (allergy) and explicit use-not-established boundaries, notably by weight in children. They further restrict use in physiological states like pregnancy and impose conditional use requirements for patients with exposure to specific parasitic diseases or underlying conditions like hepatic impairment.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory information highlights two primary domains of potential interaction: changes to drug exposure (pharmacokinetic interactions) and additive effects (pharmacodynamic interactions).

Exposure-Modifying Substances

The drug is primarily metabolized by the cytochrome P450 enzyme CYP3A4. Co-administration with strong inhibitors or inducers of CYP3A4 may alter the plasma concentrations of the drug. Specific interacting products are: Warfarin (a coumarin-type anticoagulant) and certain Antimalarial compounds. The regulatory profile notes that the drug may enhance the activity of coumarin-type anticoagulants, such as Warfarin. In this event, close monitoring of coagulation parameters, like the International Normalized Ratio ( INR), is required.

Additive Central Nervous System (CNS) Effects

Co-administration with substances that possess CNS depressant activity, including alcohol, may result in additive effects. Therefore, concurrent use is to be avoided.

Administration Constraints

Official documentation states that administration with a standard high-fat meal significantly increases the systemic availability (bioavailability) of the drug by approximately 2.5-fold compared to administration in a fasted state. This is an important consideration for maintaining predictable drug exposure.

Mechanism of Action

Selective Targeting of Parasite-Specific Channels

Quanox (Ivermectin) operates by binding with high affinity to glutamate-gated chloride ion channels (GluCl), a type of receptor specific to the nerve and muscle cells of invertebrates. The biological target exhibits high selectivity for invertebrate nerve and muscle cells, which accounts for the observed differential activity profile. This molecular interaction initiates the drug's activity by locking the channels into a sustained open state.

Neuromuscular Shutdown and Systemic Paralysis

The sustained opening of the chloride channels causes a continuous influx of negative chloride ions into the parasite's nerve and muscle cells, leading to hyperpolarization and sustained inhibition of the cell membranes' electrical excitability. This molecular cascade results in the immediate and irreversible flaccid paralysis of the parasite's musculature, functionally eliminating its motor and pharyngeal motility.

Host Protection via Differential Selectivity

The mechanism operates through differential selectivity based on the expression and structure of the GluCl receptor. Any compound reaching the host's circulation is actively transported out of the central nervous system (CNS) by the P-glycoprotein (P-gp) efflux system at the blood-brain barrier. This mechanism restricts the compound's access to mammalian CNS neurotransmitter receptors, maintaining functional selectivity.

Dosage and Administration Information

Quanox, containing the active ingredient Ivermectin, is primarily administered via the oral route as a tablet for systemic use. The administration protocol is highly standardized and detailed in clinical documentation.

The specific dose is precisely calculated based on the patient's body weight (expressed in micrograms per kilogram). For instance, the standard regimen for the treatment of intestinal Strongyloidiasis is a single oral dose of 200 µg/kg.

Administration Conditions

All oral tablets must be taken with water on an empty stomach to ensure the medicine achieves optimal systemic absorption. It is specified that no food should be consumed within two hours before or after taking the dose. This is a mandatory condition for use.

Treatment Frequency and Duration

Treatment patterns vary by indication. For the elimination of certain parasites, Quanox is typically given as a single, one-time dose. However, in conditions requiring sustained control of microfilariae, such as Onchocerciasis, the standard protocol involves intermittent cyclic retreatment, with doses often scheduled every 3 to 12 months.

Population Considerations

It is established that the oral form of the medicine is not recommended for children weighing less than 15 kilograms. Furthermore, in immunocompromised patients, the risk of refractory infection may necessitate repeated courses of treatment or suppressive therapy as directed by the product labeling.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Quanox (Ivermectin)

The information presented here describes the types of research and general findings related to the clinical evaluation of Ivermectin (the active ingredient in Quanox), as documented in regulatory and scientific literature. The purpose of this overview is to provide context on the available evidence without offering medical advice or treatment instructions.


Evidence for use in Intestinal Strongyloidiasis

Research on Ivermectin for intestinal strongyloidiasis is primarily founded on Randomized Controlled Trials (RCTs). These studies evaluated the medicine in immunocompetent adults and children (typically those weighing ge 15 kg). Trials monitored outcomes related to parasitological clearance, tracking the absence of the parasite's larvae in follow-up stool samples, and examined outcomes related to conditions where symptoms may vary in intensity. Research on standardized administration schedules in complex cases is ongoing.


Evidence for use in Onchocerciasis (River Blindness)

The evidence for this condition is derived from multiple RCTs and vast Large-Scale Observational/Epidemiological Studies linked to global public health programs. These studies explored Ivermectin's use in adults and children residing in endemic areas. Research examined outcomes such as the reduction in skin microfilariae counts and changes in disease prevalence. What remains uncertain is the extent of activity studied against the adult worm population, with research describing that the focus was primarily on the larval stage. Continued observation of long-term control programs is necessary, as research describes that the observed impact on the parasite population was tracked following sustained annual treatment protocols over many years in these studies.


What Remains Uncertain in the Research Landscape

Findings highlight what is known — and what is still uncertain. A consistent finding in the literature is that follow-up durations were limited in many trials when assessing true long-term eradication of parasites. Data are still emerging regarding the best strategies for managing infections in immunocompromised individuals. Additionally, the evidence quality varies across studies for less common indications, and sample sizes were modest in some comparative trials. The results apply only to the populations studied and do not predict whether an individual will respond similarly.

Key Studies & References

  1. Ivermectin for parasitic skin infections of scabies: A review of comparative clinical effectiveness, cost-effectiveness, and guidelines - NCBI

Frequently Asked Questions (FAQ)

Common questions about Quanox (FAQ)

Q: What are the most common things people misunderstand about taking Quanox?

A: Official regulatory information describes the specific condition under which the oral tablet is to be taken: on an empty stomach with water. Regulatory documents describe that no food should be consumed two hours before or after the dose. Taking the medicine with a high-fat meal can increase the amount of drug available in the body, which is a key consideration for its intended use.

Q: Does Quanox cause permanent side effects, or just temporary ones?

A: Regulatory classifications describe commonly reported reactions as usually not considered serious and not lasting long (temporary). However, official safety documentation also describes rare but severe adverse reactions, such as hepatic (liver) injury or severe cutaneous reactions. These serious events are documented as conditions that warrant immediate evaluation by a healthcare professional.

Q: Is it normal to feel a bit nauseous when first starting Quanox?

A: Official documents classify nausea and vomiting as commonly reported reactions (side effects). For patients being treated for certain parasitic infections, they may experience specific side effects known as Mazzotti reactions, which occur during the initial days following the first dose.

Q: If I feel better, should I continue using Quanox as prescribed?

A: The designated treatment schedule, which may be a single dose or intermittent retreatment, is determined by the specific condition being addressed. For some conditions, follow-up examinations, such as laboratory tests, are necessary over several months. These checks are conducted to help verify the continued absence of the parasite, as symptoms alone may not indicate complete resolution.

Q: Does body weight influence the effect of Quanox?

A: Yes, regulatory guidelines indicate that body weight is a critical factor for use. The exact dose of the medicine is precisely calculated based on the patient's body weight (in micrograms per kilogram) to ensure appropriate drug exposure. Furthermore, the oral tablet's safety and effectiveness have not been established in children weighing less than 15 kg.

Q: How long does Quanox stay in my system after I stop taking it?

A: Official pharmacokinetic data indicate that the drug's apparent plasma half-life is approximately 18 hours following oral administration. The medicine and its breakdown products are excreted almost entirely in the feces over an estimated period of 12 days.

Q: Is there any research showing Quanox works in different age groups?

A: Official regulatory information notes that clinical studies for this medicine did not include sufficient numbers of subjects aged 65 and over. Official information indicates that the data are insufficient to establish whether subjects in this older age group respond differently from younger subjects.

Q: What is the risk of having a serious interaction with Quanox?

A: The risk of interaction is categorized in regulatory documents based on the specific substance. Some specific drug combinations that affect the P-glycoprotein efflux system are classified as potentially severe, which regulatory documentation notes warrants careful monitoring or avoidance. Rare post-marketing reports of increased International Normalized Ratio ( INR) have been noted when co-administered with warfarin.

Q: If I miss a dose of Quanox, what generally happens?

A: Official product directions for managing a missed dose generally describe taking the dose as soon as it is remembered. However, if the time is near the next scheduled dose, the direction indicates skipping the missed dose and continuing with the regular schedule. Regulatory guidelines specify that double doses are not advised.

Q: What kind of studies have been done on the long-term safety of Quanox?

A: Safety information is based on over 25 years of clinical use for certain conditions. For conditions like onchocerciasis, large-scale epidemiological studies have tracked patient outcomes following sustained annual treatment protocols over many years.

Q: Can people with kidney or liver issues use Quanox?

A: Regulatory information indicates that dosage adjustments are not required for patients with kidney (renal) impairment. However, since the drug is extensively metabolized by the liver, its use is a factor that regulatory documentation advises should be monitored in patients with hepatic (liver) disease.

Q: Does Quanox affect your ability to drive or operate machinery?

A: Official labeling includes warnings that the medicine may cause dizziness, drowsiness, or feelings of unsteadiness. Official documents state that if these effects occur, activities requiring high levels of alertness, such as driving or operating machinery, should be avoided.

Q: What happens if I stop using Quanox suddenly?

A: Regulatory documentation discusses the potential for the recurrence of the parasite, or recrudescence, if the infection is not fully eradicated. This is why official guidance notes the importance of follow-up examinations in the months following treatment.

Q: Is Quanox known to be addictive?

A: Based on official product information, there are no warnings or statements in regulatory documents indicating that the drug has a potential for abuse or dependency.

Q: What is the difference between an allergy to Quanox and a side effect?

A: An allergy, or hypersensitivity, is classified in regulatory documents as a strict reason not to use the drug (a contraindication). A side effect, or adverse reaction, is any effect the medicine causes beyond its intended purpose. Side effects can range from common and temporary to rare and serious.

Q: How is Quanox typically supplied (e.g., tablet, liquid, capsule)?

A: The medicine is supplied in different regulatory-approved formulations depending on the condition being treated. These forms include oral tablets, as well as topical solution and lotion for external applications.

Q: What's the meaning of 'pharmacovigilance' regarding Quanox?

A: Pharmacovigilance is the regulatory process that monitors the safety of medicines after they have been approved for use. This includes the collection and analysis of reports regarding adverse effects from patients and healthcare professionals to ensure ongoing safety oversight.

Q: Is Quanox a new drug or has it been around for a long time?

A: The active ingredient in Quanox (Ivermectin) has been in clinical use for over 25 years. Its importance as a global medicine is recognized by its inclusion on the World Health Organization's Model List of Essential Medicines.

How should Quanox be stored and disposed of?

The storage and disposal of Quanox (Ivermectin) are strictly defined by regulatory guidelines to maintain product quality and ensure environmental safety.

Storage & Disposal Scope

Classification Requirement
Temperature Store at 25 C (77 F), allowing excursions up to 30 C (86 F) as Controlled Room Temperature (FDA). Some labels specify storing below 30 C (EMA).
Handling/Protection Keep the container tightly closed and protect the product from moisture and light. Tablets must be stored in the original packaging.
Child Safety The medicine must be kept out of the reach of children and stored in a secure location.
Disposal Any unused or expired product must be disposed of in accordance with local requirements (e.g., take-back programs). Environmental release into sewage systems or waterways must be avoided.

Official Storage and Disposal Summary

Official regulatory documents mandate that the oral tablet formulation be stored at controlled room temperature and protected from moisture to preserve its labeled stability. The product must be handled by keeping it in its closed container and securing it away from children. Disposal is required to follow local waste procedures, with explicit instruction against environmental contamination, recognizing the substance's potential toxicity to aquatic life.

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

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