Description
Pharmacological action
Dirofen tablets are a combination of anthelmintic drugs.
The combination of praziquantel, febantel and pyrantel pamoate, which are part of the drug, provides a wide range of its anthelmintic effects on all phases of the development of round and tape helminths, parasitizing in the gastrointestinal tract in dogs and cats, including Tohosara sanis, Tohosara mystax, Toxascaris leonina, Uncinaria stenocephala, Trichuris vulpis, Ancylostoma caninum, Echinococcus granulosus, Alveococcus multilocularis, Mesocestoides lineatus, Dipylidium caninum, Diphyllobice.
Pyrantela pamoate is a compound of the pyrimidine group, the mechanism of its action is based on the blockade of transmission of nerve impulses in the neuromuscular synapses by depolarization of the membranes of muscle cells, which causes paralysis of the muscular system of nematodes. mostly unchanged (93%) with feces.
Praziquantel is a compound of the pyrazinisoquinoline group, which is active against gastrointestinal cestodes at all phases of development. Increasing the permeability of the parasite’s cell membranes for calcium ions (Ca2 +), it causes membrane depolarization, muscle contraction and the destruction of the tegument, which leads to the death of helminths and helps them to be excreted from the animal’s body. The compound is rapidly absorbed in the gastrointestinal tract, reaching a maximum plasma concentration after 1 – 3 hours, reversibly binds to blood serum proteins (70 – 80%), is partially metabolized in the liver, re-secreted into the intestines, excreted mainly in the urine (up to 80%) within 24 hours.
Febantel refers to probenzimidazoles that are biotransformed in the body into benzimidazoles. The mechanism of action of febantel is based on the inhibition of the enzyme fumarate reductase in the mitochondria of helminths, as a result of which glucose uptake and protein synthesis of tubulin are impaired, which leads to the destruction of the microtubular apparatus of the parasite cells, causing its death. Febantel is absorbed in the intestine, metabolized in the liver and excreted with bile into the intestinal lumen, where its re-resorption is partially noted, excreted from the body both in unchanged form and in the form of several metabolites with feces and urine.
Dirofen tablets by their degree of exposure to the body belong to low-hazard substances (hazard class 4 according to GOST 12.1.007-76), at the recommended doses it does not have embryotoxic, teratogenic and sensitizing effects, is well tolerated by dogs and cats of different breeds and ages.
Indications
Dirofen tablets are prescribed for cats and dogs from 3 weeks of age for prophylactic and therapeutic purposes for nematodoses (toxocariasis, toxascaridosis, uncinariosis, trichocephalosis, hookworm infection), cestodoses (teniidosis, dipyridiosis, echinococcosis, diphyllobothriasis, mesocestoidosis) and mixed nematode-cestodose invasions.
Contraindications
Contraindication to use is individual intolerance to the components of the drug (including a history). Dirofen tablets should not be used in females in the first half of pregnancy, exhausted, sick with infectious diseases and recovering animals.
Composition
Pyrantela pamoate – 75 mg / tablet, febantel – 75 mg / tablet, praziquantel – 25 mg / tablet, excipients up to 1 mg.
Active ingredient
Fenbendazole, pyrantel
dosage form
tablets
