Biological Activity of Fenbendazole Solid Dispersion Obtained by Mechanochemical Technology with Various Components for Targeted Delivery

The purpose of the research is studying anthelmintic efficacy of fenbendazole solid dispersion obtained by mechanochemical technology with various components for targeted delivery. Materials and methods. The tests were conducted on 80 white mice infected experimentally with Trichinella spiralis and 145 sheep infected spontaneously with gastrointestinal nematodes. In case of each helminthosis, animals in different groups of 8–10 units each were given, orally, as a single dose, a fenbendazole solid dispersion (FSD) with polyvinylpyrrolidone (PVP), arabinogalactan (AG), glycyrrhizinic acid sodium salt (NaGA), dioctylsulphosuccinate sodium (NaDSS), licorice extract (LE) and hydroxyethylstarch (HES) in a dose of 2.0 mg/kg of the active ingredient as compared to fenbendazole drug at 2.0 mg/kg. A group of animals that were not given the drug was a control group. Anthelmintic activity of the preparations was considered based on dissection of the mouse small bowel and data from the sheep coproovoscopic examination carried out by the flotation technique before and 15 days after application of such drugs. Results and discussion. FSD with PVP, AG, NaGA, NaDSS, LE and HES in a dose of 2.0 mg/kg of the active ingredient (fenbendazole) showed 100; 98.7; 99.8; 100; 96.8 and 95.3% activity in mice against T. spiralis respectively; in sheep – 100; 96.3; 98.0; 100; 94.6 and 93.8% effectiveness against Nematodirus spp., and 100; 97.5; 98.6; 100; 97.0 and 96.5% activity against other species of the gastrointestinal Strongylata at 22.6–27.2% effectiveness of the main drug, namely, the active ingredient fenbendazole.