NOAH Compendium

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Date: Saturday, May 18, 2024 22:37

Description: Virbac 2013
Release 10.190
Equimax Oral Gel for Horses
Species: Horses and other equidae
Therapeutic indication: Pharmaceuticals: Endoparasiticides: Anthelmintics for horses, Tapeworm products
Active ingredient: Ivermectin, Praziquantel
Product:Equimax Oral gel
Product index: Equimax Oral gel
Withdrawal notes: Horses: Meat and Offal = 35 days; Not permitted for use in horses producing milk for human consumption.
Each gram of Equimax contains
Active substances
Ivermectin 18.7 mg
Praziquantel 140.3 mg
itanium dioxide (E171) 20 mg
Propylene glycol 731 mg
Hydrogenated castor oil
A white homogenous, oral gel containing:
Target species
Indications for use, specifying the target species
For the treatment of mixed cestode and nematode or arthropod infestations, due to adult and immature roundworms, lungworms, bots and tapeworms in horses:
Strongylus vulgaris (adult and arterial larvae)
Strongylus edentatus (adult and L4 tissue larval stages)
Strongylus equinus (adult) Triodontophorus spp. (adult)
Cyathostomum: Cylicocyclus spp., Cylicostephanus spp., Cylicodontophorus spp., Gyalocephalus spp. (adult and non-inhibited mucosal larvae).
Parascaris: Parascaris equorum (adult and larvae).
Oxyuris: Oxyuris equi (larvae).
Trichostrongylus: Trichostrongylus axei (adult).
Strongyloides: Strongyloides westeri (adult).
Habronema: Habronema spp. (adult),
Onchocerca: Onchocerca spp. microfilariae i.e. cutaneous onchocerciasis
Lungworm: Dictyocaulus arnfieldi (adult and larvae).
Cestodes (Tapeworm): Anoplocephala perfoliata, Anoplocephala magna, Paranoplocephala mamillana.
Dipteran insects: Gasterophilus spp. (larvae)
As tapeworm infestation is unlikely to occur in horses before two months of age, treatment of foals below this age is not considered necessary.
Dosage and administration
Single administration.
200 µg of Ivermectin and 1.5 mg of praziquantel per kg of bodyweight corresponding to 1.07 g of paste per 100 kg bodyweight.
To ensure administration of a correct dose, body weight should be determined as accurately as possible; accuracy of the dosing device should be checked as underdosing might lead to an increased risk of development of resistance to anthelmintic drugs.
Up to 100kg
1.070g paste
4.815g paste
1.605g paste
5.350g paste
2.140g paste
5.885g paste
2.675g paste
6.420g paste
3.210g paste
6.955g paste
3.745g paste
7.49g paste
4.280g paste
* Concerns the 7.49g syringe only
The first division delivers enough paste to treat 100 kg.
Each subsequent syringe division delivers enough paste to treat 50 kg of bodyweight. The syringe should be adjusted to the calculated dosage by setting the ring on the appropriate place on the plunger.
The syringe containing 7.49 g of paste delivers sufficient paste to treat 700 kg of bodyweight at the recommended dose rate.
Directions for use
Oral use
Before administration, adjust the syringe to the calculated dosage by setting the ring on the plunger. The paste is administered orally by inserting the nozzle of the syringe through the interdental space and depositing the required amount of paste on the back of the tongue. The animal's mouth should be free of any food. Immediately after administration, elevate the head of the horse for a few seconds to ensure the dose is swallowed.
The veterinary surgeon should give advice regarding appropriate dosing programmes and stock management to achieve adequate parasite control for both tapeworm and roundworm infestations.
Contra-indications, warnings, etc
Do not use in foals under 2 weeks of age.
Do not use in mares from which milk is taken for human consumption.
Do not use in horses known to be hypersensitive to active ingredients or to any other ingredients
Special warnings for each target species
The product can be used safely in stallions.
Care should be taken to avoid the following practices because they increase the risk of the development of resistance and could ultimately result in ineffective therapy:
• Too frequent and repeated use of anthelmintics from the same class, over an extended period of time.
• Underdosing, which may be due to underestimation of body weight, misadministration of the product, or lack of calibration of the dosing device (if any).
Suspected clinical cases of resistance to anthelmintics should be further investigated using appropriate tests (e.g. Faecal Egg Count Reduction Test). Where the results of the test(s) strongly suggest resistance to a particular anthelmintic, an anthelmintic belonging to another pharmacological class and having a different mode of action should be used.
Resistance to ivermectin (an avermectin) has been reported in Parascaris equorum in horses in a number of countries including the EU. Therefore the use of this product should be based on local (regional farm) epidemiological information about susceptibility of nematodes and recommendations on how to limit further selection for resistance to anthelmintics.
Special precautions for use
i. Special precautions for use in animals
Avermectins may not be well tolerated in all non target species. Cases of intolerance are reported in dogs, especially Collies, Old English Sheepdogs and related breeds or crosses, and also in turtles and tortoises.
Dogs and cats should not be allowed to ingest spilled paste or access to used syringes due to the potential for adverse effects related to ivermectin toxicity.
Parasite resistance to a particular class of anthelmintic may develop following frequent, repeated use of an anthelmintic of that class.
ii. Special precautions to be taken by the person administering the veterinary medicinal product to animals
Wash hands after use (to be sure that eye contamination can not occur). Avoid contact with the eyes. In the case of accidental contact, rinse with abundant quantities of water. In case of eye irritation, seek medical attention. Do not eat, drink or smoke while handling this product. In the event of accidental ingestion, seek medical advice and show the doctor the leaflet so that he knows what you have taken.
Adverse reactions (frequency and seriousness)
Horses carrying heavy infection of Onchocerca microfilariae have experienced such reactions as swelling and itching after treatment. It is assumed that these reactions are the result of the destruction of large numbers of microfilariae.
In case of very high levels of infestation, destruction of the parasites may cause a mild transient colic and loose faeces in the treated horse.
Colic, diarrhea and anorexia have been reported in vary rare occasions post treatment, in particular when there is heavy worm burden.
In very rare occasions, allergic reactions such as hypersalivation, lingual oedema and urticaria, tachycardia, congested mucus membranes, and subcutaneous oedema have been reported following treatment with the product.
A veterinarian should be consulted if these signs persist.
Use during pregnancy, lactation or lay
The product can be used safely in mares during the whole pregnancy period and lactation period.
Overdose (symptoms, emergency procedures, antidotes), if necessary
A tolerance study performed in foals from 2 weeks of age with doses up to 5 times the recommended dosage showed no adverse reactions.
Safety studies conducted with the veterinary medicinal product administered to mares at 3 times the recommended dosage at 14 day intervals during the whole gestation and lactation did not show any abortions, any adverse effects on the gestation, parturition and on the mares general health, nor any abnormalities on the foals.
Safety studies conducted with the veterinary medicinal product administered to stallions at 3 times the recommended dosage did not show any adverse effects in particular on the reproductive performances.
Withdrawal period
In Horses: Meat and Offal: 35 days
Not permitted for use in horses producing milk for human consumption
Special precautions for the disposal of unused veterinary medicinal product or waste materials derived from the use of such products
Any unused product or waste material should be disposed of in accordance with national requirements.
EXTREMELY DANGEROUS TO FISH AND AQUATIC LIFE. Do not contaminate surface waters or ditches with the product or used container.
Pharmaceutical precautions
Keep out of the reach of children.
Store below 30° C.
Part-used syringes should be stored below 25° C.
Shelf life
Shelf-life of the veterinary medicinal product as packaged for sale : 2 years.
Shelf-life after first opening the immediate packaging: 6 months.
Legal category
Legal category: POM-VPS
Packaging quantities
Nature and composition of immediate packaging
An adjustable multidose syringe consisting of high density polyethylene (white) and low density polyethylene (white). The syringe contains 6.42 or 7.49 grams of product and is fitted with variable dose capacity.
Product presentations: Box of 1, 2, 12, 40 or 48 syringes.
Blister of one syringe.
Further information
ATCvet code: QP 54AA51
Pharmacodynamic properties
Ivermectin is a macrocyclic-lactone derivative which has a broad antiparasitic activity against nematodes and arthropods. It acts by inhibiting nerve impulses. Its mode of action includes the glutamate-gated chloride ion channels. Ivermectin binds selectively and with high affinity to glutamate-gated chloride ion channels which occur in invertebrate nerve and muscle cells. This leads to an increase in the permeability of the cell membrane to chloride ions with hyperpolarization of the nerve or muscle cell, resulting in paralysis and death of the relevant parasites. Compounds of this class may also interact with other ligand-gated chloride channels, such as those gated by the neurotransmitter gamma-aminobutyric acid (GABA). The margin of safety for compounds of this class is attributable to the fact that mammals do not have glutamate-gated chloride channels.
Praziquantel is a pyrazinoisoquinoline derivative which exerts its anthelmintic activity against many species of cestodes and trematodes. It primarily acts by impairing both motility and function of the suckers of cestodes.
Its mode of action includes the impairing of neuromuscular co-ordination but also influencing the permeability of the integument of the worms, which leads to excessive calcium and glucose loss. This induces spastic paralysis of the parasite musculature.
Pharmacokinetic particulars
After administration of the recommended dosage to horses, the ivermectin plasma peak was reached within 24 hours. The ivermectin concentration was still over 2 ng/ml 14 days after administration. The elimination half-life of ivermectin was 90h. With regard to praziquantel, the plasma peak was reached within 1 hour. The praziquantel was rapidly eliminated and was not detected after 8 h post treatment. The elimination half-life of praziquantel was 40 min.
Not applicable.
Marketing Authorisation Number
Vm 05653/5042
Significant changes
GTIN description:Equimax 7.49g Syringe
GTIN description:Equimax Yard Pack 7.49g Syringe x 48