Nexpraz Duo 18.7 mg/g + 140.3 mg/g Oral Paste for Horses
Active ingredients: Ivermectin, Praziquantel
Form
Paste
Species
Manufacturer
Bioveta, a.s.
VMD MA No.
46608/3007
What it's used for
The veterinary medicinal product is only indicated when use against parasite groups targeted by each of the combined active substances is indicated at the...
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Nexpraz Duo 18.7 mg/g + 140.3 mg/g Oral Paste for Horses — SPC Details
Source: VMD Summary of Product Characteristics (SPC). Last updated 27 Mar 2026.
targeted by each of the combined active substances is indicated at the same time.
Large strongyles:
Strongylus vulgaris (adults and L4 arterial larval stages)
Strongylus edentatus (adults and L4 tissue larval stages)
Strongylus equinus (adults)
Triodontophorus spp. (adults)
Small strongyles:
Cyathostomum , Cylicostephanus
spp., Gyalocephalus spp. (adults and uninhibited mucosal larvae)
Parascaris: (adults and larvae)
Oxyuris: Oxyuris equi
Trichostrongylus: Trichostrongylus axei (adults)
Strongyloides: Strongyloides westeri (adults)
Habronema: Habronema spp. (adults)
OnchocercaOnchocerca spp.microfilariae i.e. cutaneous onchocerciasis
Lungworms: Dictyocaulus arnfieldi (adults and larvae)
Gasterophilus
(larvae)
equivalent to 1.07 g of the paste per 100 kg of body weight.
To ensure correct dosing, it is necessary to determine the most accurate weight
possible and to measure the appropriate dose to prevent underdosing which may
increase the risk of developing anthelmintic resistance.
Horse weightPaste doseHorse weightPaste dose
Up to 100 kg1.070 g401–450 kg4.815 g101-150 kg1.605 g451-500 kg5.350 g151-200 kg2.140 g501-550 kg5.885 g201-250 kg2.675 g551-600 kg6.420 g251-300 kg3.210 g601-650 kg6.955 g301-350 kg3.745 g651-700 kg7.490 g351-400 kg4.280 g
The first division of the applicator is sufficient to treat animals weighing 100 kg bw.
Each additional division of the applicator will provide a sufficient volume of paste for 50
kg bw. Set the applicator according to the calculated dose by moving the ring to the
corresponding mark.
An applicator containing 7.49 g of paste will provide enough paste to treat a horse
weighing 700 kg at the recommended dosage.
Instructions for use
Before administration, set the applicator according to the calculated dose by moving
the ring to the corresponding mark. The paste is administered orally through the
interdental space to the root of the tongue. The animal’s mouth should not contain any
food residue. Immediately after administration, raise the horse’s head for a few
seconds to ensure that the dose is swallowed properly.
In order to achieve an adequate level of prevention against infection with tapeworms
and roundworms, it is necessary to provide veterinary consultancy on appropriate
dosing and stock management.
Do not use in case of hypersensitivity to the active substances or to any of the
excipients.
Very rare
(< 1 animal / 10,000 animals
treated, including isolated
reports):
Colic
1,3
, Loose Stool
, Diarrhoea
Anorexia
Allergic reaction (such as hypersalivation, lingual
oedema, urticaria, tachycardia, congested
mucous membrane, Allergic oedema)
Undetermined frequency
(cannot be estimated from the
available data)
Swelling
Itching
1
Mild transient in case of very high levels of infestation, caused by destruction of the
parasites
In case of very high levels of infestation, caused by destruction of the parasites
In particular when there is heavy worm burden.
For horses carrying heavy infection of Onchocerca microfilariae. It is assumed that
these reactions are the result of the destruction of large numbers of microfilariae.
A veterinarian should be consulted if these signs persist.
Reporting adverse events is important. It allows continuous safety monitoring of a
veterinary medicinal product. Reports should be sent, preferably via a veterinarian, to
either the marketing authorisation holder or its local representative or the national
competent authority via the national reporting system. See the package leaflet for
respective contact details.
SPC may increase the resistance selection pressure and lead to reduced efficacy. The
decision to use the product should be based on confirmation of the parasitic species
and burden, or of the risk of infestation based on its epidemiological features, for each
group of animals.
Repeated use for an extended period, particularly when using the same class of
substances, increases the risk of resistance development. Within a herd, maintenance
of susceptible refugia is essential to reduce that risk. Systematically applied interval-
based treatment and treatment of a whole herd should be avoided. Instead, if feasible,
only selected individual animals or subgroups should be treated (targeted selective
treatment). This should be combined with appropriate husbandry and pasture
management measures. Guidance for each specific herd should be sought from the
responsible veterinarian.
In the absence of risk of co-infection, a narrow spectrum product should be used.
Partial cross-resistance between ivermectin and moxidectin has been reported.
Furthermore, resistance to ivermectin (an avermectin) has been reported in
equorum in horses in a number of countries including the EU. Therefore, the use of
this product should take into account local information about susceptibility of the target
parasites, where available.
It is recommended to further investigate cases of suspected resistance, using an
appropriate diagnostic method (e.g. Faecal Egg Count Reduction Test). Confirmed
resistance should be reported to the marketing authorisation holder or to the competent
authorities.”
Tapeworm infestations are rare in foals before 2 months of age, therefore treatment of
foals younger than 2 months of age is not considered necessary.
Confirmed cases of praziquantel resistance in tapeworms infecting horses have been
reported in the USA, and the first isolated cases of ivermectin resistance in
cythostomins have been reported in the USA from horses imported from the EU. Given
the global horse trade, the risk of resistance emerging in Europe is significant.
It is recommended to further investigate suspected resistance cases using an
appropriate diagnostic method (e.g., Faecal Egg Count Reduction Test), especially in
imported animals or those without a known history of origin.
Tapeworm speciation was not performed in the efficacy study of the veterinary
medicinal product. The indication for is based on the typical
pathoanatomical finding observed during the efficacy study and its predominant
prevalence among equine tapeworms.
Special precautions for safe use in the target species:
Not applicable.
Special precautions to be taken by the person administering the veterinary medicinal
product to animals:
People with known hypersensitivity to ivermectin, praziquantel, tartrazine, or cinnamon
should avoid contact with the veterinary medicinal product.
This veterinary medicinal product may cause skin and eye irritation. Avoid contact with
skin and eyes. Personal protective equipment consisting of gloves should be worn
when handling the veterinary medicinal product.
In the case of accidental contact with skin or eyes wash the affected area immediately
with plenty of water. If skin or eye irritation persist, seek medical advice.
In the case of accidental ingestion, especially by a child, seek medical advice
immediately and show the package leaflet or label to the physician.
Do not eat, drink or smoke while handling the veterinary medicinal product.
Wash hands after use.
Special precautions for the protection of the environment:
Not applicable.
Other precautions:
Avermectins may not be well tolerated in all non-target species. Cases of intolerance
have been reported in dogs, especially collies, Old English Shepherd dogs and related
breeds or their crossbreds, as well as in turtles and tortoises.
Dogs and cats should not have access to paste residues or used applicators due to
the possibility of side effects associated with ivermectin toxicity.
Keep the applicator tightly closed. Replace the cap after use.
Not authorised for use in animals producing milk for human consumption.
This information is sourced from the official Summary of Product Characteristics (SPC) published by the Veterinary Medicines Directorate (VMD). It is provided for informational purposes only and does not replace professional veterinary advice. Always consult your vet before administering any medication.
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