Coopers

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Coopers

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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 Coopers

Property Description
Active Ingredients Deltamethrin, Ivermectin
Form Pour-on Solution, Spot-on Preparation
Pharmacological Class Broad-spectrum Antiparasitic Agent (Endectocide)
Common Use Control of internal and external parasitic infestations in livestock
Origin Synthetic (Deltamethrin) and Semisynthetic (Ivermectin)

What Type of Medicine is Coopers?

Coopers is distinguished as a dual-action veterinary drug, classified as a broad-spectrum antiparasitic agent that targets both internal and external parasitic infestations in livestock. It functions as an endectocide, a specific category of antiparasitic medication renowned for its ability to address a wide array of parasitic organisms concurrently, which is a key differentiator from single-ingredient treatments. The strategic combination of active substances is designed for enhanced efficacy in controlling multiple pest types simultaneously. The Ivermectin component, a macrocyclic lactone, targets a variety of problematic internal organisms, providing foundational support for the product's comprehensive profile.

Composition: Active Ingredients and Dual-Action Class

The unique positioning of Coopers stems from its two distinct active ingredients: Deltamethrin and Ivermectin. Deltamethrin is a synthetic pyrethroid, acting primarily as an ectoparasiticide upon contact with the external surface. Ivermectin, conversely, is a derivative of the macrocyclic lactone class, characterized by its semisynthetic origin and its systemic action. This particular combination is often manufactured as a pour-on solution, facilitating a non-invasive topical route of administration that is convenient for managing large animal groups, such as cattle during seasonal parasite control protocols.

General Purpose: Why Use a Combination Antiparasitic?

The primary general purpose is to leverage the synergy of these two components to ensure the most complete parasite control possible. The dual mechanism ensures that the animals are protected from both arthropods on the skin surface and susceptible nematodes internally. This comprehensive approach is particularly beneficial in scenarios requiring large-scale control, where simultaneous action against multiple parasites is necessary for animal health maintenance. Combining a macrocyclic lactone and a synthetic pyrethroid is a recognized strategy for achieving simultaneous internal and external parasite control. This combined administration of agents is used for comprehensive management of the overall parasitic load.

What side effects are possible with Coopers?

Adverse Reaction Scope

Category Regulatory Safety Information
Key Adverse Reaction Categories Local irritation (pyrethroid component); transient neurological signs and systemic effects (macrocyclic lactone component).
Frequency Classification Common local reactions such as mild erythema (redness) and pruritus (itching) at the application site. Uncommon systemic effects may include lethargy or mild, transient nervous signs.
System-Organ Classes Involved Primarily Skin and Subcutaneous Tissue Disorders (irritation, alopecia) and Nervous System Disorders (e.g., ataxia, tremors, hypersalivation) following systemic exposure.
Serious Adverse Reactions Labeling documents the potential for convulsions and severe anaphylactic reactions. Use in non-target species, such as certain dog breeds, is specifically associated with the risk of fatal adverse reactions.
Population-Specific Safety Constraints apply to Collies and related breeds due to known genetic sensitivity (MDR1 mutation) to the Ivermectin component. The product is also restricted from use in lactating dairy cows and pregnant dairy heifers near calving.
Exposure-Related Patterns Local application site reactions are generally classified as transient (short-lived) and resolve spontaneously. The elimination of certain parasites (Hypoderma larvae) is associated with the potential for host-parasite reactions.
Safety-Related Restrictions The product is classified as Highly Toxic to Aquatic Life due to the Deltamethrin component, mandating explicit environmental precautions to prevent contamination of waterways. It is also restricted from use in non-target species.

Safety Classifications (High-Level)

  • Regulatory Frequency Framework: Standard classifications are applied to categorize expected rates of occurrence (e.g., Common, Uncommon, Rare) as per veterinary regulatory guidance.
  • Regulatory Basis: Safety data is established through official veterinary product monographs and regulatory agency submissions (e.g., FDA NADA, SmPC).
  • Context-of-Use Safety Notes: Contact with the product may be irritating to human skin and eyes, and is explicitly noted to be flammable, requiring caution away from heat and open flames.

Regulatory Safety Summary

The official safety profile differentiates between expected Common local irritation and the more clinically significant Uncommon or Rare systemic neurological effects, which are typically associated with increased exposure or genetic susceptibility. This summary highlights mandatory population-specific restrictions for certain breeds and lactation status, alongside critical environmental constraints necessary for product use.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory documentation describes the potential for serious toxicity following overdose, particularly when high-concentration veterinary formulations are inappropriately ingested. Care is largely symptomatic and supportive, as no specific antidote is known.

Documented Overdose Manifestations

System Affected Officially Documented Signs and Symptoms
Neurological Confusion, headache, decreased awareness or responsiveness, severe sleepiness, hallucinations, tremors, seizures, and coma.
Cardiovascular Hypotension (low blood pressure) and changes in heart rate (tachycardia).
Gastrointestinal Nausea, vomiting, abdominal pain, and diarrhea.
Dermal Localized paresthesia (tingling, burning, numbness) following topical overexposure.

Immediate Emergency Action

Severe toxicity can lead to life-threatening outcomes, including respiratory failure and death. The regulators mandate that you seek immediate medical attention for any suspected overexposure. Call 911 or contact the Poison Control Center hotline immediately for emergency advice and management. Treatment in a hospital setting may include administration of activated charcoal (under specific conditions) and specific medications, such as benzodiazepines to manage convulsions.

Therapeutic Uses of Coopers

What Coopers Treats: Main Uses and Benefits

Combination medications are generally utilized for supportive management for symptoms related to acute, temporary illnesses. The medication is intended for several common symptom areas.

Coopers is relevant for easing discomfort across several symptom domains, including pain, fever, and general physical aches; allergic manifestations such as sneezing and runny nose; and temporary gastrointestinal distress like constipation.


Common Clinical Scenarios

This medication is commonly used across conditions presenting with acute episodes where short-term symptomatic assistance is needed. It helps address symptom clusters that may become intense or disruptive during temporary illness, offering supportive relief when symptoms interfere with routine activities. It contributes to improved comfort during periods of heightened symptoms, supporting the patient during difficult episodes by easing distress.

Quick Fact: Relief for Multiple Symptom Clusters


Patient Comfort and Functional Support

Applied in scenarios where additional management of discomfort is required, Coopers assists with maintaining functional stability by providing symptomatic relief. This may help patients cope more steadily with symptom fluctuations and supports general well-being during symptomatic phases.

Eligibility and Restrictions for Use

The official eligibility profile for Coopers (a Deltamethrin/Ivermectin antiparasitic pour-on) is strictly defined by governmental regulatory documents, focusing on target species and physiological status.

Populations for Whom Use is Established

Use is officially established for Cattle (Beef and non-lactating Dairy) and Sheep, which are the approved target species listed in the product's regulatory summary. Certain formulations are also permitted for use in Horses for specific pest control.

Absolute Regulatory Contraindications

Classification Restricted Population Rationale
Contraindicated Animals with known hypersensitivity to Deltamethrin or Ivermectin. Allergy/Intolerance Risk
Contraindicated Cows producing milk intended for human consumption. Food Safety/Residue Risk
Contraindicated Non-target species (e.g., dogs and cats). Fatal Toxicity Risk

Conditional Use and Restrictions

Classification Conditional Population Restriction
Restricted Pregnant Dairy Heifers Must not be treated within 60 days before expected calving.
Restricted Convalescent or Sick Animals Contraindicated until animal is recovered.
Restricted Calves for Veal Use is not established due to unestablished withdrawal periods.

Regulatory documents define who can and cannot use this medicine by creating absolute contraindications for non-target species and animals contributing to the human milk supply. Eligibility is granted only to the labeled target species whose physiological status and overall health meet the criteria explicitly documented in the official prescribing information.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The established interaction profile for Coopers, which contains Ivermectin, is based strictly on governmental regulatory information and documented clinical experience with its active substances.

Pharmacokinetic and Pharmacodynamic Interactions

Interaction Type Interacting Agents (Examples) Official Description of Interaction
Exposure Modification Antifungal agents (e.g., Ketoconazole, Posaconazole), Mirabegron These medicines are documented to increase systemic exposure and drug buildup of Ivermectin by affecting metabolic or transport pathways (primarily CYP3A4 and P-glycoprotein).
Pharmacodynamic Anticoagulants (e.g., Warfarin, Acenocoumarol) Ivermectin may enhance the anticoagulant effect of Vitamin K antagonists, which has been associated with increased bleeding times in post-marketing reports.

Other Official Interaction Constraints

  • Alcohol: Use with alcohol is noted as a potential interaction in regulatory summaries for Ivermectin.
  • Population-Specific Note: Cautions exist for patients with pre-existing liver problems (hepatic impairment), as this condition may amplify the clinical significance of metabolism-related interactions due to compromised drug clearance.
  • Contraindications: The official regulatory documentation does not list any medicines as explicitly contraindicated for co-administration with this product.

The regulatory profile defines the interaction structure by identifying agents that modify the clearance and concentration of Ivermectin, most often through CYP3A4 and P-glycoprotein modulation. This includes critical documentation of pharmacodynamic reinforcement with blood thinners, which mandates caution according to official guidance.

Mechanism of Action

How Coopers Works

The mechanism of this antiparasitic relies on two distinct, complementary modes of neurotoxicity that target the neuromuscular signaling pathways of parasitic organisms.


Chloride Channel Activation: The Irreversible Inhibitor

This mechanism is mediated by the systemic ingredient, Ivermectin, which acts as an agonist of the glutamate-gated chloride channels ( GluCls) found exclusively on invertebrate nerve and muscle cells. Its binding causes the channel pore to open essentially irreversibly, driving a sustained influx of chloride ions. This influx induces profound hyperpolarization that completely silences electrical activity and results in sustained flaccid paralysis of internal parasites.


Sodium Channel Disruption: The Hyper-Excitation Mechanism

The external component, Deltamethrin, modulates the voltage-gated sodium channels ( Na^+ channels) on the axonal membranes of ectoparasites. Its interaction delays the normal closing (inactivation) of the channel, causing a persistent sodium ion flow and repetitive, uncontrolled firing of motor neurons. This hyperexcitation cascade results in tremors and spastic paralysis in external parasitic arthropods.


Dual-Spectrum Mechanism

The combination utilizes two distinct chemical classes and two independent neurotoxic targets ( Na^+ channels and GluCls) to establish a targeted dual-spectrum mechanism. This coordination disables a wide spectrum of internal nematodes and external arthropods via independent, yet coordinated, molecular disruptions to their motor control systems.

Dosage and Administration Information

Coopers is administered exclusively via the topical pour-on route for application to the animal's external skin surface. This formulation is not for oral or injectable use. Usage is weight-dependent, requiring a calculation based on the animal's current body mass to ensure correct delivery. The specified dosage is 1 mL for every 10 kg of body weight, which delivers 500 mu g of Ivermectin per kilogram. Accurate volumetric measurement, typically using a calibrated applicator gun, is required to prevent underdosing.

The solution is applied along the topline, running in a narrow strip from the animal's withers to the tailhead. Administration is defined as an intermittent treatment, generally a single application per infestation cycle, and is part of a planned parasite control protocol. The duration of effectiveness for certain parasites extends up to 28 days post-application, informing the timing for potential re-treatment.

Specific procedural constraints govern application: the animal's hide must be dry at the time of use, and treatment should be avoided if rainfall is expected to wet the animal within six hours. Furthermore, population exclusions apply, prohibiting use in female dairy cattle of breeding age and in calves intended for processing as veal. These parameters collectively define the standardized administration protocol.

Recent Clinical Evidence

The evidence for the dual-action medicine Coopers is derived from official regulatory evaluations and controlled scientific research, including randomized trials and field studies. This research explores the outcomes related to the combination of Deltamethrin and Ivermectin in the context of parasite infestations in livestock.


Evidence for Internal Parasite Control (Gastrointestinal Nematodes)

Research exploring the internal effects of the medicine has mainly involved controlled Randomized Controlled Trials (RCTs) and specialized laboratory studies focused on parasite infestations in livestock (cattle and sheep). Researchers examined outcomes by measuring the Fecal Egg Count Reduction (FECR). This measurement describes how many parasite eggs were observed in the study populations during the study period. Findings describe patterns observed in studies where an initial reduction in egg counts was monitored in animals with susceptible parasite strains. This research contributes to the understanding of internal parasite patterns in treated populations. However, certainty remains low regarding the consistency of results across all regions, and the scientific literature notes documented reports describing resistance in certain parasite species to the Ivermectin component in some geographical areas. Furthermore, long-term effects are not fully established, as follow-up durations were limited.


Evidence for External Parasite Control (Ticks, Lice, and Mites)

Research involving the Deltamethrin component, which is studied for external effects, was evaluated in controlled Field Efficacy Trials and in-vitro laboratory studies. This research examined outcomes related to elimination rates of arthropod infestations in primary study populations of Cattle and Sheep. Studies reported patterns related to the elimination of susceptible ectoparasite species following contact with the solution. The duration of the residual action was observed to vary, with re-infestation reported in short intervals. A notable limitation is the documented occurrence of pyrethroid (Deltamethrin) resistance in specific tick and insect populations in certain regions, indicating that results apply only to the populations studied.


Limitations and Research Gaps

Research provides context but not individual predictions. A primary research limitation is the widespread documentation of resistance to both the Ivermectin and Deltamethrin components across various regions and parasite species, which may affect the observed findings. Limited information exists to draw conclusions about the effects in highly stressed or specific high-risk populations, as sample sizes were often modest and populations studied were generally healthy groups.

Key Studies & References

  1. SUMMARY OF PRODUCT CHARACTERISTICS: Deltamole 7.5 mg/ml pour-on suspension for cattle (Regulatory Safety/Efficacy Overview)

Frequently Asked Questions (FAQ)

Common questions about Coopers (FAQ)

Q: What is Coopers and what is it used for?

A: Coopers is a prescription medication used to treat a specific type of bacterial infection in adults. It is classified as an antibiotic and works by stopping the growth of certain types of bacteria.

Q: How should I take Coopers?

A: Always take Coopers exactly as your healthcare provider tells you. The medication is typically taken once daily with or without food. You must swallow the tablets whole with a glass of water. It is important to complete the full course of treatment, even if your symptoms start to improve. Stopping early may cause the infection to return.

Q: What should I do if I miss a dose?

A: If you miss a dose of Coopers, take the missed dose as soon as you remember. If it is almost time for your next scheduled dose, skip the missed dose and continue with your regular dosing schedule. Do not take two doses at the same time to make up for a missed dose.

Q: What are the common side effects of Coopers?

A: Like all medicines, Coopers can cause side effects, although not everybody gets them. Common side effects may include:

  • Nausea
  • Diarrhea
  • Headache
  • Changes in taste
  • Dizziness

If you experience any bothersome side effects, speak with your healthcare provider or pharmacist.

Q: Can I drink alcohol while taking Coopers?

A: It is generally not recommended to drink alcohol while taking Coopers. Alcohol can increase the risk or severity of certain side effects, such as dizziness or stomach upset. Discuss alcohol consumption with your healthcare provider before starting treatment.

Q: Are there any serious side effects I should watch out for?

A: While rare, some serious side effects require immediate medical attention. Stop taking Coopers and seek emergency medical help right away if you experience:

  • Signs of a severe allergic reaction (such as rash, hives, swelling of the face or throat, or trouble breathing).
  • Severe, watery diarrhea or bloody stools (which may be a sign of a severe bowel infection).
  • Irregular heartbeat or palpitations.
  • Severe dizziness or fainting.

Always report any serious or unusual side effects to your healthcare provider promptly.

Q: What other medicines will interact with Coopers?

A: Coopers may interact with several other medications, which could change how they work or increase the risk of serious side effects. It is essential to inform your healthcare provider of all the prescription, non-prescription, and herbal products you are taking. Specific types of medicines that may interact include:

  • Certain antiarrhythmic medicines used for irregular heart rhythm.
  • Medicines for migraine headaches.
  • Certain anticoagulants (blood thinners).
  • Other antibiotics.

Your doctor will review your medications and advise if any dosage adjustments or changes are necessary.

Q: Can pregnant or breastfeeding women take Coopers?

A: Coopers is generally not recommended for use during pregnancy or while breastfeeding. If you are pregnant, plan to become pregnant, or are breastfeeding, you must discuss the risks and benefits of treatment with your healthcare provider before taking this medicine.

How should Coopers be stored and disposed of?

How to Store and Dispose of Coopers

Official regulatory documentation provides mandatory requirements for the storage, handling, and disposal of Coopers to ensure stability and safety.

Storage Requirements

Storage Component Requirement (As per Labeling)
Temperature Control Store Coopers at or below the maximum temperature specified on the packaging (e.g., 25 C) or in the refrigerator left(2 C-8 C
ight), if required.
Protection Keep the medicine in its original, tightly closed container. Protect from both light and moisture. Do not freeze.
Child Safety Keep Coopers out of the sight and reach of children.
Stability Adhere to the stated expiration date. If applicable, observe the 'in-use' period after the first opening or preparation.

Disposal Instructions

Unused or expired Coopers must not be disposed of via household trash or wastewater (e.g., sink or toilet). Return the medicine to a local pharmacy or designated pharmaceutical waste collection program as required by official governmental guidelines.

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

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