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Alezan oral paste

6 g
Release form :

6.0 g syringe dispenser. Outer package - carton.

Product benefits:

  •  High efficiency.
  •  Convenient presentation.
  •  Excretes all types of parasites.

Chemical composition and pharmacological properties

Alezan contains praziquantel - 10% and ivermectin - 2% (as active ingredients), as well as excipients.

It is a combined antiparasitic drug. It provides significant nematodocidic and cestodocidic effect on all development phases of roundworms (including Delafondia vulgaris, Alfortia edentatus, Dictyocaulus amfieldi, Parascaris equorum, Strongylus equinus, Strongyloides westeri, Setaria equine), and cestodes (such as Anoplocephala magna, Anoplocephala perfoliata and Paranoplocephala mamillana), as well as larvicidal action on larvas of horse botflies (Gastrophilus spp.) parasitizing horses.

Praziquantel (a component of the drug) is a pyrazine isoquinoline compound. The mechanism of action includes increase in cellular membrane permeability for calcium ions in roundworms and cestodes causing general muscular clonus and constant paralysis which lead to death of worms.

Ivermectin is a macrocyclic lactone with broad-spectrum antiparasitic action including roundworms and botfly larvas. Mechanism of ivermectin action involves influence on chloride ion current level through membranes of nervous and muscle cells of a parasite. Primary targets are glutamate-gated chloride channels and GABA receptors. Change in chloride ion current level damages neural impulse conduction resulting in paralysis and death of parasites.


Use Alezan to deworm horses with nematodosis (including delafondiosis, alfortiosis, trichonematosis, parascaridosis, oxyuriasis, strongylosis, strongyloidosis, parafilariosis, setariosis, habronemiasis and drascheiosis), cestodiasis (anoplocephalidose) and associative invasions (poly invasions) caused by roundworms, cestodes and botfly larvas.


Increased individual sensitivity to the drug components. Do not use in milking mares with esculent milk, animals <100 kg, as well as in debilitated, contagious and recovering animals.

Adverse events

Adverse events and complications are not observed in case of administration as per package insert.

Dosage and administration

Single oral administration (1 g per 100 kg of body weight). Press out paste from a syringe dispenser on the base of tongue. Insert device in interdental space of oral cavity, then lift animal head within several seconds. Fix volume of paste per a horse by moving a fixator on plunger rod and appropriate dose fixing. Each syringe division stands for 1 g of paste.
Treatment and prevention: 2-4 times in a year, depending on type of disease and environmental invasion degree (under ovo- and larvoscopic control) according to recommendations listed in the table.


Processing terms

strongyloidosis, delafondiosis, alfortiosis, strongylosis

At least once in 2 months during pasture season


Twice (in spring and autumn) during pasture season

parascaridosis, oxyuriasis

Once in 2 months during housing season

habronemiasis, drascheiosis

In spring, summer and autumn (according to indications)

parafilariosis, setariosis, onchocercosis

Monthly during insect flight season (troubled farm units)


In spring, summer and autumn (according to indications)


September-November (according to indications)

Before mass processings test each drug batch on small group (5-7 animals). In default of complications within 3 days, process all the livestock.

Special warnings

Animals are allowed to be slaughtered for meat not earlier than 20 days after deworming. Meat of compulsorily slaughtered animals received before stated period termination can be used to feed carnivorous animals.


Protect from light and moisture. Keep out of the reach of children and animals. Store separately from food and animal feeding at 0-20°С.

Pharmaceutical form

6.0 g syringe dispenser. Outer package - carton.

The information provided in this catalog is for reference only. There may be some changes in the characteristics, packaging and packaging of products.

AVZ reserves the right to make such changes without notice. You can get full information about the updated products from your personal manager or your nearest AVZ dealer.

All drugs for veterinary use from this catalog may be contraindicated and when using it is necessary to familiarize yourself with the Instructions for Use.

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