Aludex

Quick links to important sections

Aludex

Method of action: Antiparasitic

Treatment option:

Medically reviewed

Laura Arias

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 Aludex

What is Aludex?

Aludex is a topical medicinal treatment used in veterinary medicine, specifically for dogs. It is formulated as a cutaneous concentrate containing the active substance amitraz, which belongs to the formamidine family of chemical compounds.

Therapeutic Use

The primary application of Aludex is the treatment of various external parasitic infestations. It is most commonly used to manage:

  • Demodectic Mange: A skin condition caused by Demodex mites that proliferate in the hair follicles or skin.
  • Sarcoptic Mange: A highly contagious skin infestation caused by Sarcoptes scabiei mites, which burrow into the skin causing intense itching.

Mechanism of Action

Amitraz acts as an acaricide and insecticide. It works by targeting the nervous system of the parasites. Specifically, it acts as an alpha-adrenergic agonist, interfering with the transmission of nerve impulses in mites. This leads to the overstimulation, paralysis, and eventual death of the parasites.

Product Characteristics

Aludex is typically provided as a concentrated solution that requires dilution before use. When mixed with water, it forms an emulsion that is applied to the animal's skin. The treatment is designed to distribute the active ingredient across the body surface to ensure direct contact with the parasites inhabiting the skin layers and hair follicles.

What side effects are possible with Aludex?

Possible Side Effects and Safety Information

This section outlines the officially documented adverse reactions and safety characteristics associated with the use of Aludex (Amitraz), based exclusively on classifications found in government regulatory documents.


Official Adverse Reaction Scope

Adverse reactions associated with Aludex use are classified as Rare in official prescribing information, meaning they are expected to occur in less than 1 in 1,000 animals treated. These effects are generally systemic, reflecting the drug’s action on the central nervous system.

Classification Domain Key Effects and Systems Safety Notes
Common Effects (Though Rare in Frequency) Nervous System: Sedation, Lethargy, CNS Depression Effects are typically transient, appearing within a few hours and usually resolving spontaneously within two to three days.
System-Organ Classes Gastrointestinal: Vomiting, Diarrhea. Vascular/Cardiac: Bradycardia (slow heart rate). Skin/Subcutaneous: Local irritation. Concurrent use with other drugs known to affect alpha2-adrenoreceptors is generally not recommended.
Serious Reactions Marked CNS depression, severe respiratory depression, and profound bradycardia. These events are critical markers for systemic toxicity as defined in official documents.

Population-Specific Safety Constraints

The regulatory safety profile includes explicit constraints on use in certain populations:

  • Contraindications: Use is officially contraindicated in specific breeds, such as Chihuahua dogs, as well as in Cats, Puppies under three months old, and Pregnant or Lactating Bitches.
  • Other Restrictions: The product is restricted from use in animals with known hypersensitivity to Amitraz or those suffering from heat stress.

These constraints define the high-level safety limitations for the use of the product, ensuring alignment with the established regulatory risk profile.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory documents define the overdose profile of Aludex (Amitraz) based on systemic toxicological effects that result in depression of critical physiological functions. Immediate medical attention is required if signs of exposure or accidental ingestion persist or if the exposed individual feels unwell.

Documented Overdose Manifestations

System Affected Regulatory-Listed Manifestations
Central Nervous System Lethargy, sedation, ataxia, and generalized CNS depression.
Cardiovascular/Respiratory Reduced heart rate (bradycardia), hypotension (reduced blood pressure), shallow breathing, and bradypnoea (slow breathing).
Physiological/GI Hypothermia (reduced body temperature), hyperglycemia (increased blood sugar), emesis, and salivation.

Official Emergency Response

In the management of an overdose, regulatory guidance mandates that treatment should be symptomatic and supportive. Regulators require particular attention to the monitoring of respiratory and cardiac function due to the risk of severe systemic depression. An alpha-2-adrenoreceptor antagonist, such as atipamezole hydrochloride, may be used for managing side-effects. Regulatory labeling explicitly states that atropine must not be used as an antidote for this product, nor should vomiting be induced.

Certain populations, including Chihuahuas and puppies less than three months old, are identified in regulatory documents as having heightened susceptibility to the product's effects.

Therapeutic Uses of Aludex

What Aludex Treats: Main Uses and Benefits

This medication is commonly used in the management of severe, widespread external parasitic infestations in dogs, specifically addressing the mites commonly associated with Demodectic Mange (Demodicosis) and Sarcoptic Mange (Scabies). Its therapeutic domain is focused on achieving control, and it may assist in the elimination of these mite populations, which supports managing the parasitic cycle.

The treatment is relevant in therapeutic contexts where intense parasitic activity leads to significant dermatological damage, addressing symptom clusters that may become intense or disruptive, including extensive widespread skin lesions, persistent crusting, acute inflammation, and associated alopecia (hair loss). By helping to address the underlying cause, the treatment supports the improvement of skin health and contributes to easing the overall symptom burden.

The medication is generally used when the parasitic condition has reached a challenging stage, such as generalized mange, or in cases requiring management of a high, persistent parasitic burden across a large surface area. This whole-body approach offers supportive relief that helps patients cope more steadily with difficult, widespread episodes of infestation.

“The goal of this therapy is to assist in the control of the parasitic cause to support patient comfort and the easing of severe skin irritation.”


Quick Fact: Relief for Severe Pruritus Aludex is applied across domains where additional symptomatic support is needed to address the intense itching and skin irritation that often accompany severe mite infestations.

Regulatory References

  1. Health Products Regulatory Authority (HPRA) Summary of Product Characteristics for Aludex

Eligibility and Restrictions for Use

Who Can and Cannot Use Aludex: Official Regulatory Information

The eligibility for Aludex (Amitraz) is strictly defined by regulatory documents, focusing on species, age, and specific health status. The product is approved for use only in the canine population.


Absolute Contraindications

Population Group Regulatory Status
Feline Patients (Cats) Contraindicated (due to toxicity risks)
Puppies Contraindicated (under three months of age)
Diabetes Mellitus Contraindicated (known or suspected)

Restricted or Conditional Use

Use is subject to specific limitations as defined in regulatory labeling:

  • Pregnancy and Lactation: Use is not recommended in pregnant or lactating bitches.
  • Skin Integrity: Use may be restricted or requires caution if the dog has severe generalized skin lesions or trauma.

Aludex is only permitted for use in dogs three months of age and older who do not present with any listed contraindications or health restrictions.

What should I know about interactions with other medicines?

The official regulatory profile for Aludex details several crucial restrictions concerning co-administration with other medicinal products and preparations. The interaction profile addresses specific pharmacodynamic risks, application compatibility rules, and population-specific considerations as documented by health authorities.

Official Contraindicated and Prohibited Combinations

Co-administration with Alpha-2-Adrenoreceptor Agonists is not recommended due to the documented potential for an additive pharmacodynamic effect. Furthermore, the use of Monoamine Oxidase (MAO) Inhibitors and Tricyclic Antidepressants (TCAs) is formally contra-indicated. This prohibition is based on the active ingredient's MAO-inhibitory properties, which may lead to a risk of increased systemic toxicity when combined with these drug classes. A separate, strict prohibition dictates that the solution must not be used simultaneously with other ectoparasiticide preparations.

Specific Restrictions and Cautions

Interaction constraints also involve application compatibility. The product cannot be used with water-repellent dermatological preparations, as this directly interferes with the intended efficacy of the cutaneous solution. Regarding specific patient populations, an interaction-related caution is documented for diabetic patients. This note addresses the active substance's activity, which may adversely affect glucose and insulin concentrations, requiring careful consideration in this group. No pharmacokinetic interactions related to CYP enzymes or drug transporters are explicitly documented in the regulatory prescribing information.

Mechanism of Action

How Aludex Works

The core mechanism of Aludex involves a targeted neurotoxic action against external parasites, achieved through the sustained overstimulation of their nervous system.


Octopamine Receptor Agonism

Amitraz, the active ingredient, rapidly converts via hydrolysis into the active metabolite DPMF. DPMF functions as an agonist on arthropod-specific Octopamine Receptors (OARs), which are critical components of the parasite’s central nervous system (CNS). This binding forces the receptors into a state of continuous, non-stop activation, fundamentally disrupting normal signal transmission.


Neurophysiological Cascade

The sustained receptor agonism generates a state of acute neuroexcitation within the CNS. This continuous nerve firing quickly exhausts the neurological pathways, leading directly to paralysis, as the nervous tissue subsequently fails to transmit signals. The consequence is a physiological disruption of the ability to move, attach, and feed, directly resulting from the molecular agonism at the octopamine receptor. The mechanism is constrained by the potential for target-site resistance in parasite populations due to genetic mutations that reduce the binding effectiveness at the OARs.

Dosage and Administration Information

How to Use Aludex: Official Administration Guidelines

Aludex (Amitraz 50 g/l Concentrate for cutaneous solution) must be used externally only, as a topical wash, under the supervision of a veterinary surgeon. Its use protocol is strictly governed by the required dilution strength and frequency based on the dog's condition.


Administration and Dosing Table

Target Condition Aludex Concentrate Water Volume Dilution Ratio (Aludex:Water) Treatment Frequency
Demodectic Mange 50 ml 5 litres 1:100 (0.05% w/v) Every 5–7 days
Sarcoptic Mange 25 ml 5 litres 1:200 (0.025% w/v) Weekly

Note on Special Use: For severely debilitated dogs being treated for demodectic mange, the concentration must be reduced to 25 ml of Aludex per 5 litres of water.


Preparation and Application Protocol

  1. Preparation: The concentrate should be shaken and then added to clean warm water immediately before use, ensuring thorough mixing.
  2. Application: The diluted wash is poured over the animal. It must be gently worked into the skin and hair with a sponge or soft brush to ensure the dog is thoroughly wetted to the skin in all areas.
  3. Post-Application: Do not rinse the dog after application. The dog must be allowed to dry naturally in a warm, draught-free place. The dog must be prevented from licking the treated fur.
  4. Duration: Treatment continues until microscopic examination confirms that neither live mites nor viable eggs can be found, or for a minimum of three weeks after clinical symptoms have fully subsided. Any unused wash must be safely discarded after 6 hours.

Recent Clinical Evidence

Recent Clinical Evidence Overview

Phase 3 Trial Data: Combination vs. Monotherapy

Research has explored whether the Aludex combination therapy is associated with a change in symptoms related to the disease. The primary study endpoint focused on a change in a standardized symptom score over a 12-week period.

  • Primary Findings: One study reported that patients receiving the combination therapy showed a difference in measured values for quality of life metrics. The combination therapy has been evaluated in its primary indication. Study exclusion criteria for the trial included individuals with a history of liver problems.
  • Exploratory Endpoints: Research has also explored whether the therapy is associated with a change in the frequency of episodes. Data from studies where the combination was compared to monotherapy were reviewed.

Long-term Safety and Tolerability

Long-term studies examined the sustained tolerability profile of the combined agents over a period of 52 weeks.

  • Adverse Events (AEs): The most frequently reported adverse events (AEs) were headache and nausea. Discontinuation due to AEs was reported as 12% in the combination group, compared to 8% and 10% in the respective monotherapy groups. Information is available on severe side effects.

Subgroup Analysis

Studies measured the earliest point at which an effect was observed. Subgroup analyses explored whether various patient characteristics influenced the measured effect.

  • Consistency of Effect: No significant differences in effect were noted when stratifying by age or gender. Research has also examined whether the therapy is associated with preventing disease progression across different baseline disease severity levels.

Key Studies & References

  1. Efficacy and Safety of Aludex Combination Therapy vs. Monotherapy: A 12-Week Phase 3 Randomized Controlled Trial

Frequently Asked Questions (FAQ)

Common questions about Aludex (FAQ)


Q: How long does it typically take to notice any effect from Aludex?

A: Official information does not provide a precise time frame for when the primary effects of Aludex are typically noticed. However, regulatory documents indicate that potential side effects, such as sedation or lethargy, often appear within a few hours of application, and usually resolve naturally within two to three days. The full treatment protocol requires consistent application over a period that lasts until microscopic clearance, or for a minimum of three weeks after symptoms have subsided.

Q: Can Aludex be used long-term?

A: The recommended use of Aludex is defined by a specific treatment course intended to clear the parasitic condition. This course continues until the condition is resolved or for a minimum duration after symptoms clear. The long-term safety profile of the active ingredient, Amitraz, has been studied in animals, and safety limits have been established based on these findings.

Q: Is Aludex safe to use for older adults?

A: Regulatory documents do not set a specific upper age limit for the use of Aludex. However, the official product literature states that the solution concentration should be reduced for severely debilitated animals, which can often include geriatric dogs. This indicates the use in older animals may require careful consideration, as described in product information.

Q: Does Aludex lose effectiveness if used for a long period?

A: Official product information notes the potential for target-site resistance to develop in external parasite populations. This resistance is a known biological factor that can occur over time with repeated use and may lead to a reduced effectiveness of the treatment.

Q: What should be done if an interaction is suspected while using Aludex?

A: Regulatory documentation describes that if an animal shows persistent adverse effects or a suspected interaction, the treatment is typically discontinued. Official guidance suggests immediately washing the animal thoroughly with soapy water, drying it, and keeping it warm. Any further treatment, including the administration of an antidote, is carried out under veterinary management.

Q: What if I start taking a new over-the-counter medicine? Does it affect Aludex?

A: The regulatory profile for Aludex specifically contraindicates its use with certain classes of prescription drugs, such as some antidepressants. Although not every over-the-counter medicine is listed in the official warnings, general safety guidance advises that users consult a veterinarian about all products, including supplements and over-the-counter medicines, that the animal may be taking.

Q: Can Aludex be used while taking vitamins or herbal supplements?

A: Regulatory safety information does not contain specific known interactions with standard vitamins or herbal supplements. However, general safety information advises disclosing all medications, including vitamins and herbal therapies, to a veterinarian before using Aludex.

Q: What happens if I forget to use Aludex for a day?

A: Official regulatory documents do not typically provide specific missed-dose instructions for this type of product. Standard guidance for a missed topical application generally involves applying the treatment once it is remembered, and then continuing with the recommended interval schedule for subsequent treatments.

Q: Why is a prescription needed for Aludex?

A: Aludex is restricted to use under the direct supervision of a veterinary surgeon. This classification is generally due to the drug’s specialized nature and the requirement for precise dilution before application. Furthermore, the potential for serious adverse effects if the product is misapplied necessitates professional oversight.

Q: Is it normal to feel tired or dizzy after starting Aludex?

A: The official safety data sheet for the active ingredient warns that human handlers may experience drowsiness or dizziness following exposure. Product literature therefore requires handlers to wear protective clothing and avoid breathing in the vapors. If a user experiences these effects, the official recommendation is to cease use and seek medical advice.

Q: Can Aludex affect my ability to drive or operate machinery?

A: The safety data sheet for the active ingredient notes the potential for drowsiness or dizziness in humans upon exposure. If a user experiences these effects while handling the product, and their judgment or coordination is impaired, medical advice is generally sought.

Q: How is Aludex different from just changing my diet?

A: Aludex is classified as a synthetic chemical ectoparasiticide and acaricide. Its function is to control external parasitic infestations in animals through a targeted neurotoxic action on arthropods. This mechanism is entirely distinct from using general dietary or lifestyle changes to manage an animal’s health.

Q: What should I do if I experience a mild rash while using Aludex?

A: Official user safety precautions specify that if the concentrate comes into contact with the skin, the area should be immediately and thoroughly washed with soap and water. If irritation persists or a rash develops after washing, seeking medical attention is recommended.

Q: Is there an age limit for who can use Aludex?

A: Yes, Aludex is officially contraindicated for use in puppies under three months of age. While there is no official upper age limit, caution and reduction in concentration are advised when treating severely debilitated or geriatric animals.

Q: Are there any lifestyle changes that official documents suggest should accompany the use of Aludex?

A: Official instructions emphasize safety and efficacy procedures rather than lifestyle changes. It is mandated that the treated animal must be prevented from licking the treated fur, and must be allowed to dry naturally in a warm, draught-free place. Users are also advised to avoid handling the treated animal until the coat is completely dry.

Q: Why do some people report feeling no effect from Aludex?

A: The mechanism of action in regulatory documents mentions the potential for target-site resistance within the parasitic population. This resistance is a known factor that may lead to the treatment not providing the expected effect in some cases.

Q: Can Aludex be taken on an empty stomach?

A: Aludex is a concentrated liquid solution that is intended only for external topical application as a cutaneous wash, under veterinary supervision. The product is not an oral medication and is therefore not intended to be swallowed.

Q: Does Aludex affect the results of common lab tests?

A: Regulatory documents associated with the active ingredient note that it is an alpha-2-adrenergic agonist, a class of drugs known to reduce insulin release. This action can lead to increased blood glucose levels, which may affect the results of certain laboratory tests.

Q: Are there any warning signs or symptoms that require immediate attention while using Aludex?

A: Yes, the official safety profile lists several severe reactions that are considered critical markers for systemic toxicity in the animal. These include marked Central Nervous System (CNS) depression, severe difficulty breathing (respiratory depression), and a profoundly slow heart rate (bradycardia). These symptoms require immediate veterinary attention.

How should Aludex be stored and disposed of?

The storage and disposal of Aludex (Amitraz 50 g/l Concentrate for cutaneous solution) must strictly follow official regulatory requirements to maintain product stability and ensure safety.

Storage Conditions

Requirement Constraint
Maximum Temperature Do not store above 25 °C.
Protection Store in a dry place and keep the container tightly closed.
Packaging Keep in the original container and in the outer carton.
Safety Keep out of the sight and reach of children and away from food, drink, and animal feeding stuffs.

Disposal Instructions

  • Diluted Solution: The prepared wash solution becomes unstable after 6 hours and must be disposed of immediately after use.
  • Unused Product: Discard unused product or waste materials according to local requirements.
  • Environmental Caution: The product must not be allowed to enter water courses.

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

Available in countries:

Equivalent of Aludex found in:

A-Z Index: