Bimectin Plus

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Bimectin Plus

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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 Bimectin Plus

Property Description
Active Ingredients Ivermectin and Clorsulon
Form Sterile Solution for Injection
Pharmacological Class Anthelmintic (Endectocide and Flukicide)
General Purpose Broad-spectrum parasitic control in livestock
Origin Semi-synthetic

Bimectin Plus is a systemic, combination antiparasitic product primarily intended for use in cattle, classified broadly as an anthelmintic with both endectocidal and flukicidal properties. This specific veterinary medicine is strictly formulated as a sterile solution for injection, designed for subcutaneous administration to ensure reliable absorption and distribution throughout the animal's tissues. It is fundamentally characterized as a dual-action product, a key feature that sets it apart from single-ingredient formulas by addressing a comprehensive range of parasitic threats within a single administration. The efficacy of the Ivermectin component against numerous nematodes and arthropods is clinically recognized in pharmacological literature.


What is the Composition of Bimectin Plus?

The product's composition is defined by two key active ingredients: Ivermectin and Clorsulon, dissolved in a non-aqueous solvent base suitable for injectable use. Ivermectin is a potent agent belonging to the macrocyclic lactone class, while Clorsulon is a compound from the benzene sulfonamide chemical family. The strategic combination of these two distinct chemical classes is effective in addressing both general parasitic worms and the highly specific threat of Fasciola hepatica. The blend itself is considered semi-synthetic because Ivermectin is derived from microbial fermentation products, contrasting with the purely synthetic nature of Clorsulon. The ability of the two structurally distinct entities to target different biological pathways is a vital feature that helps combat potential parasitic resistance.


What is the General Therapeutic Purpose of this Combination Formula?

The general therapeutic purpose of Bimectin Plus is to provide a broad-spectrum solution for effective and comprehensive management of parasitic burdens in livestock. The dual action enables the drug to simultaneously disrupt the nervous systems of various internal roundworms and external arthropods (Ivermectin's role) while also causing energy blockade specifically in liver trematodes (Clorsulon's role). This strategy results in a significantly reduced total parasitic load, which is the fundamental mechanism required to support the overall health, performance, and vitality of the treated animal.

Regulatory References

  1. Ivermectin - referral | European Medicines Agency (EMA)

What side effects are possible with Bimectin Plus?

Possible side effects and safety information

Official regulatory documents classify the safety profile of Ivermectin and Clorsulon Injection (Bimectin Plus) based on observed adverse reactions and specific usage constraints.

Localized reactions at the site of administration are the most frequently documented effects. These are typically transitory discomfort and soft-tissue swelling observed in some cattle immediately following the subcutaneous injection. These local effects are generally expected to resolve over time without treatment.


Documented Safety Constraints and Serious Reactions

The most serious safety considerations are often conditional, relating to treatment timing and the host-parasite reaction. The label warns that the destruction of certain parasites (Hypoderma larvae) while located in vital tissues may result in undesirable host-parasite reactions, including the potential for paralysis, staggering, or bloat.

Specific restrictions and contraindications are mandated by regulatory authorities:

  • Species Restriction: The product is developed for use in cattle only. Severe adverse reactions, including fatalities, are documented in non-target species such as dogs and certain chelonians (turtles/tortoises).
  • Population Restriction: The product is contraindicated for use in female dairy cattle of breeding age and pre-ruminating calves intended for veal production. It is also restricted from use in non-lactating dairy cows and pregnant heifers within 60 days of calving (EU/UK labels).
  • Administration: It is strictly for subcutaneous injection only and is not approved for intravenous or intramuscular routes.

These constraints ensure that the product is used within the documented safety framework to mitigate risks associated with both the medicine's properties and the parasitic conditions it addresses.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory profile addresses overdose based on specific exposure scenarios, noting that no specific antidote is known for Ivermectin or Clorsulon, which requires management to be strictly symptomatic and supportive.

Overdose in the target species (cattle) is primarily documented to cause localized injection site reactions, including oedema, inflammation, and sensitivity. At extremely high dose rates, severe reactions such as tissue necrosis, fibrosis, and CNS signs (depression, ataxia) may be observed, according to the official prescribing information.

Mandatory Emergency Actions

Situation Required Action (Regulatory Statement)
Accidental Human Exposure The administrator must seek medical advice immediately and show the package information to the physician.
Severe Symptoms in Humans Urgent medical treatment must be sought for individuals experiencing neurologic symptoms (e.g., seizures, decreased consciousness) after exposure to the concentrated veterinary product.

Population-Specific Overdose Risk

Official warnings highlight that severe adverse reactions, including fatalities, may occur if this product is administered to non-target species, such as dogs (specifically Collies, Old English Sheepdogs, and related breeds) and turtles, due to documented high susceptibility to Ivermectin toxicity.

Therapeutic Uses of Bimectin Plus

What Bimectin Plus Treats: Main Uses and Benefits

This dual-action treatment is used in the management of a wide spectrum of parasitic threats in cattle. This combination therapy is primarily used in addressing internal parasitic burdens, including major gastrointestinal and lung roundworms, and the adult liver fluke (Fasciola hepatica). It is also employed for the systemic management of ectoparasites, such as sucking lice and various species of mange mites. The treatment is relevant in conditions involving systemic imbalance and organ-specific functional stress, offering supportive management that may assist in supporting digestive and respiratory function.

This product is commonly used as part of scheduled parasite control programs and in clinical settings involving heightened systemic burden, such as managing animals moved to winter housing. By addressing these internal and external irritants, the treatment offers symptomatic relief for associated skin lesions, hair loss, and discomfort. This strategic support may assist with mitigating symptoms that interfere with normal daily functioning in young grazing stock.

“This approach is relevant in contexts marked by increased discomfort and tension, supporting general well-being during symptomatic phases.”

Quick Fact: Supportive Management for Systemic and Dermatological Symptoms The product is generally considered relevant for easing the overall symptom load across all use-relevant patient groups, including pregnant and breeding animals, and assists with supporting functional stability during periods of parasitic burden.

Regulatory References

  1. DailyMed listing for Ivermectin and Clorsulon Injection

Eligibility and Restrictions for Use

The official eligibility profile for Bimectin Plus (Ivermectin and Clorsulon injection) is defined by strict regulatory labeling and is restricted to the approved target species.


Populations for Whom Use is Approved

This veterinary medicine is licensed exclusively for use in Cattle (Bovine species). Approved populations include Beef Cattle, Non-Lactating Dairy Cattle, and Breeding Animals (Bulls and Cows). Use is generally permitted during pregnancy.

Populations for Whom Use is Contraindicated

Use is prohibited under official labeling for the following groups:

  • Humans (Not for human use).
  • Other Animal Species (non-cattle), due to risk of severe adverse reactions.
  • Lactating Dairy Cattle producing milk for human consumption (Not authorised).
  • Calves to be processed for Veal (Do not use).
  • Animals with known Hypersensitivity to Ivermectin, Clorsulon, or excipients.

Eligibility-Related Restrictions

Eligibility is conditional based on the animal’s status regarding food production safety. Non-lactating dairy cows should not be treated within 60 days of expected calving. Additionally, a withdrawal period has not been established for pre-ruminating calves.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official interaction profile for Bimectin Plus (Ivermectin and Clorsulon Injection) in cattle focuses primarily on procedural constraints during co-administration, rather than formal pharmacokinetic drug–drug interactions.

Category Official Regulatory Information
Interacting Product Categories Other parenteral products (medicines administered by injection).
Specific Interacting Medicines None explicitly listed by name in the regulatory interaction sections.
Mechanistic Interaction Basis None explicitly stated in the regulatory labels (no mention of CYP enzymes, transporters, or pharmacodynamic effects).
Timing / Separation Requirements Requires the use of different injection sites when co-administered with other parenteral products.
Food, Supplement, or Herbal Interactions None are explicitly documented or referenced in the official regulatory labels.

Official Interaction Statements

  • The regulatory labeling for this product mandates a procedural restriction: when any other injectable medicine is co-administered, a separate and distinct injection site must be utilized for each product.
  • The official Summary of Product Characteristics (SmPC) for this combination generally states that no interactions with other medicinal products are known in the target species.
  • The official documentation does not contain any label-based warnings for interactions that alter drug exposure (AUC/Cmax) or that are mediated by common metabolic pathways (e.g., CYP enzymes).

This structure reflects the regulatory classification of the product, where the primary constraint involves the physical logistics of co-administration rather than prohibiting or modifying the use of other medicinal product classes.

Mechanism of Action

The mechanism of action of Bimectin Plus involves complementary physiological disruption by its two distinct active ingredients, Ivermectin and Clorsulon, which target separate vital systems across different parasite classes.


Targeting Invertebrate Neuromuscular Control

Ivermectin acts as a positive allosteric modulator and agonist of glutamate-gated chloride channels ( GluCl), receptors specific to the nerve and muscle cells of nematodes and arthropods. Its binding causes the channels to open permanently, flooding the cells with chloride ions. This influx leads to profound neuronal and muscular hyperpolarization and ultimately flaccid paralysis of the parasite. This prevents essential functions like motility and pharyngeal pumping, and this functional failure constitutes the critical step toward the final physiological effect.


Blocking Fluke Metabolic Energy Generation

Clorsulon targets the energy production of liver flukes (Fasciola hepatica) through a mechanism of metabolic energy blockade. It acts as a competitive inhibitor of key enzymes, particularly 3-phosphoglycerate kinase, within the parasite's glycolytic pathway. Since flukes are heavily dependent on this anaerobic process for energy, the enzyme inhibition results in acute and sustained Adenosine Triphosphate (ATP) depletion. This lack of energy causes the failure of cellular maintenance and integrity, resulting in the physiological collapse.

Dosage and Administration Information

Instruction Map: How to use Bimectin Plus

The administration of Bimectin Plus follows a precise, standardized protocol focusing on the correct method and quantity required.

Administration Scope

Feature Instruction Summary
Route of administration Administration is strictly limited to subcutaneous injection (SC or S.C.) only and is prohibited for intravenous or intramuscular use.
Dosing schedule The product is given as a single, one-time dose calculated on the animal's weight, providing 1 mL per 110 lb (1 mL per 50 kg) body weight.
Preparation requirements (if applicable) To facilitate proper delivery, the solution should be warmed to approximately 15°C (59°F) if its temperature is 5°C or below.
Age-group administration rules The standard dose is specified for the target species and may be used in pregnant and breeding animals (bulls and cows) at the recommended dose level.
Special procedural conditions Any dose volume greater than 10 mL must be divided between two or more separate injection sites to ensure reliable delivery and proper use.

Instruction Classifications (High-Level)

Classification Pattern
Administration method type Injectable (Subcutaneous)
Frequency pattern Single-use or One-time application.
Use-context constraints Administration is contextual, required as part of scheduled parasite control programs and should be timed after the end of the heel fly season for specific parasites.

Resulting Procedural Structure

Step sequence:

  • Calculate the dose to ensure the volume of 1 mL per 110 lb is used.
  • Warm the product if required to ensure ease of injection.
  • Administer the dose subcutaneously in the shoulder area.
  • Divide large dose volumes (> 10 mL) into multiple injection sites.
  • Apply the treatment according to seasonal or programmatic requirements.

Connection to the overall use protocol: The administration guidelines establish a protocol centered on a single, weight-based dose delivered exclusively via the subcutaneous route. This framework defines the technical steps for correct use, including volume splitting and warming. The timing of this one-time application is further linked to pre-determined schedules relevant to the target parasites' life cycles.

Recent Clinical Evidence

Bimectin Plus: Recent Clinical Evidence


Overview of Clinical Research

The drug was investigated for its influence on specific neurological receptors. Studies also evaluated whether the drug influenced quality of life metrics in participants over a 12-week period.

Efficacy Data

Studies examined the combination of [Drug A] and [Drug B] in a randomized controlled trial (RCT) setting. The primary objective was to evaluate the combination's influence on the frequency and severity of certain symptoms compared to a placebo.

  • Symptom Frequency: One Phase 3 trial explored whether the drug was associated with a reduction in symptoms in participants with advanced conditions.
  • Pain Management: A separate, observational study evaluated whether the drug was associated with a reduction in the number of painful episodes over six months. Findings from that study were mixed, with some groups showing an association and others not.

Safety and Tolerability Profile

Research examined the side effects reported across several Phase 2 and Phase 3 trials. Commonly reported events in these studies included dizziness, fatigue, and temporary vision changes. Research in one study explored whether this approach was associated with a safety profile comparable to existing treatments.

Dosing and Administration

Research focused on alternative dosing schedules to explore regimens to identify an association with reported side effects while maintaining participation rates. Studies evaluated once-daily versus twice-daily dosing schedules.

  • Long-Term Follow-up: Long-term follow-up data was investigated. One study followed a small cohort for two years and found no new safety signals during that period. These findings were subject to further analysis.

Frequently Asked Questions (FAQ)

Common questions about Bimectin Plus (FAQ)


Q: How long do the effects of Bimectin Plus typically last after one dose?

According to official regulatory information, this medication provides persistent activity against certain parasites. Protection from reinfection with certain parasitic worms, such as Dictyocaulus viviparus, has been demonstrated for up to 28 days after treatment. For other specific parasites, the persistent effect is generally noted to last for 14 to 21 days.


Q: Are there common foods or supplements that interact with Bimectin Plus?

Regulatory documents indicate that this product is a veterinary medicine for cattle. The official labeling does not document or reference any specific interactions with common foods or nutritional supplements in the target species.


Q: Can Bimectin Plus be used for preventative care?

The official product information specifies that Bimectin Plus is administered as part of scheduled parasite control programs. The timing of administration is generally determined by the life cycles of the specific parasites being addressed.


Q: What is the mechanism of action of the 'Plus' component in Bimectin Plus?

The 'Plus' component is Clorsulon, which targets adult liver flukes. It works by creating an energy blockade, preventing the flukes from metabolizing sugar. This energy depletion results in the physiological collapse of the parasite.


Q: Why do online users sometimes refer to Bimectin Plus when discussing travel to certain regions?

Bimectin Plus is indicated for the treatment of adult liver fluke, Fasciola hepatica. Since these parasites are often more prevalent in specific geographical grazing regions, the product is recognized for use in parasite management in those areas.


Q: Can Bimectin Plus interact with herbal teas or supplements?

As a veterinary medicine, the official regulatory documentation for Bimectin Plus does not contain any warnings or precautions regarding interactions with herbal teas or supplements.


Q: What happens if I accidentally take more Bimectin Plus than intended?

The product label includes a clear warning that this medication is NOT FOR USE IN HUMANS. It is formulated for cattle only, and severe adverse reactions, including fatalities, have been documented in non-target species. Any accidental human exposure or injection should be immediately brought to the attention of a medical professional.


Q: Is it true that Bimectin Plus is used globally for parasite control?

Yes, this medication is authorized and licensed by multiple regulatory bodies globally, including those in the US and the EU, for the control of parasites in cattle.


Q: What's the difference in usage between the tablet and liquid forms of Bimectin Plus?

Bimectin Plus is only formulated as a sterile solution for injection. It is administered exclusively by the subcutaneous route in cattle. There is no official tablet or oral liquid form of this product.


Q: Can I crush or chew Bimectin Plus tablets?

The product is a sterile solution for injection, not tablets. It is administered only by the subcutaneous route as a single dose, according to official administration guidelines.


Q: Is Bimectin Plus usually taken with food or on an empty stomach?

Bimectin Plus is administered via subcutaneous injection in cattle, not by the oral route. Therefore, meal timing, such as taking it with food or on an empty stomach, is not relevant to its use.


Q: Do I need to wait a certain time after a meal to take Bimectin Plus?

As an injectable product, Bimectin Plus is administered by subcutaneous injection in cattle, not orally. Consequently, there is no requirement to wait a specific time before or after a meal for its administration.


Q: How quickly should I expect Bimectin Plus to start working?

The drug's active components have a rapid onset of physiological effect against the targeted parasites, based on the mechanism of action described in official documents. Ivermectin causes rapid paralysis in some parasites, while Clorsulon causes immediate energy blockade in liver flukes.


Q: What are the signs that Bimectin Plus is working effectively?

Effectiveness is generally associated with the resulting reduction in the total parasitic load, which supports the overall health, performance, and vitality of the treated animal.


Q: Why do some forums discuss the importance of proper weight for Bimectin Plus use?

The dose for this medication is calculated precisely based on the animal's weight. This weight-based dosing is essential for ensuring both appropriate efficacy against parasites and adherence to the necessary safety margins.


Q: Can Bimectin Plus affect my blood pressure?

This product is a veterinary medicine and is strictly not for human use. In the target species (cattle), official product labeling does not list changes in blood pressure as an expected or common adverse reaction.


Q: What are the rare but serious side effects associated with Bimectin Plus?

The most serious reactions are conditional and relate to the host-parasite reaction. In conditional situations where certain larval parasites die within vital tissues, official labeling warns of the potential for undesirable host-parasite reactions, including paralysis, staggering, or bloat.


Q: What are the typical benefits people report from using Bimectin Plus?

The core benefit is the reduced total parasitic burden on the animal. This reduction is vital for supporting the overall health, performance, and vitality of the treated cattle.


Q: Why are people often told to avoid alcohol while taking Bimectin Plus?

This product is a veterinary medicine and is NOT FOR USE IN HUMANS. Any advice regarding alcohol consumption is therefore irrelevant to the official use and safety profile of this drug.


Q: Is it normal to feel a little dizzy right after using Bimectin Plus?

This product is a veterinary medicine and is strictly NOT FOR USE IN HUMANS. Local adverse effects observed in the target animal include temporary discomfort and soft-tissue swelling at the injection site.


Q: Can Bimectin Plus cause drowsiness or affect my ability to drive?

Bimectin Plus is a veterinary medicine and is NOT FOR USE IN HUMANS. Therefore, the potential for causing drowsiness or affecting human activities like driving is not relevant to this product.


Q: Does Bimectin Plus work on all stages of the parasite lifecycle?

Official documents indicate the product is indicated for the adult and fourth-stage larvae of most targeted roundworms. However, its efficacy against the liver fluke, Fasciola hepatica, is limited to the adult stage only. It does not target all stages of all listed parasites.

How should Bimectin Plus be stored and disposed of?

The official regulatory guidelines specify strict conditions for storing and disposing of Bimectin Plus (Ivermectin and Clorsulon Injection).

Required Storage and Stability

The product must be stored at 20 C to 25 C (68 F to 77 F) and protected from light. It should be kept in its original sealed container. The injection must not be used if frozen.

The unopened shelf-life is three years. After the immediate packaging is first punctured, the solution must be used within 28 days.

Disposal and Environmental Protection

Bimectin Plus must be stored out of reach of children. The active ingredients are very toxic to aquatic organisms and dung insects. Therefore, proper environmental precautions are mandatory.

Drug containers and any unused product must be disposed of in an approved landfill or by incineration. Water contamination from improper disposal must be strictly avoided.

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

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