The effectiveness of the anthelmintic drug «Prazitel® Specialis suspension» for dogs and cats over 6 years of age in puppies and kittens with intestinal worm infection was studied. Suspension Prazitel® Specialis refers to low-hazard substances (hazard class IV according to GOST 12.1.007-76), contains a unique active substance R-praziquantel in combination with pyrantel pamoat and silybin. Efficiency of «Prazitel® Specialis suspension» for dogs weighing up to 5 kg after double oral administration to puppies at a dose of 1.0 ml/kg BW, which corresponds to a dose of R-praziquantel 1.5 mg/kg, pyrantel pamoate 15.0 mg/kg and silybin 1.7 mg/kg for toxocariasis, hookworm infection, dipylidiosis, teniosis and mixed invasion was 100 %. The effectiveness of «Prazitel® Special suspension» for dogs weighing from 5 to 25 kg after double oral administration to puppies at a dose of 1.0 ml/5,0 kg BW, which corresponds to a dose of R-praziquantel 1.5 mg/kg, pyrantel pamoate 20.0 mg/kg and silybin 1.7 mg/kg for toxocariasis, hookworm infection, dipylidiosis, teniosis and mixed invasion was 100 %. Anthelmintic drug «Prazitel® Specialis suspension» for cats after double oral administration to kittens at a dose of 1.0 ml/kg BW, which corresponds to a dose of R-praziquantel 1.5 mg/kg, pyrantel pamoate 15.0 mg/kg and silybin 1.7 mg/kg provides complete exemption animals from helminths with toxocariasis, hookworm infection, dipylidiosis, teniosis and mixed invasion. Thus, the high therapeutic effectiveness of the anthelmintic drug «Prazitel® Specialis suspension» for dogs and cats in puppies and kittens with intestinal worm infection has been experimentally confirmed.
The effectiveness of a new anthelmintic drug for dogs and cats Supramil® tablets was studied. Therapeutic efficacy of the drug Supramil® tablets after a single application of spontaneously infested intestinal nematodes and / or cestodes to dogs and puppies at a dose of 2.5 mg / kg for R-praziquantel and 0.5 mg / kg for milbemycin oxime was 100%. Therapeutic efficacy of the drug Supramil® tablets after a single application of spontaneously infested intestinal nematodes and / or cestodes to cats and kittens at a dose of 2.5 mg / kg for R-praziquantel and 2.0 mg / kg for milbemycin oxime was 100%. Thus, Supramil® tablets are a highly effective treatment for the most common intestinal helminthiases of dogs and cats.
Trazodone is a selective antagonist and serotonin reuptake inhibitor used in medicine to treat anxiety. Toxicological studies of trazodone succinate were carried out on the basis of the Department of Pharmacology of the Veterinary Faculty Stavropol State Agrarian University, Russia. The results obtained in the study of acute toxicity of the drug Express Uspokoin® tablets allow us to identify the new drug as belonging to moderately dangerous substances for mammals. When studying the subchronic toxicity of the drug in rats, it was found that its use for 90 days at doses 10...50 times higher than the therapeutic one does not cause changes in the clinical condition of experimental rats. The totality of the experimental data obtained unambiguously confirms the good tolerability of the drug Express Uspokoin® tablets. As a result of toxicological studies, it was found that the drug does not exhibit irritating and allergizing effects.
As a result of the studies, it was found that the proposed drug based on toltrazuril, tinidazole and levamisole hydrochloride according to the average lethal oral dose in accordance with GOST 12.1.007–76 belongs to the fourth hazard class - low-hazard substances. To assess the acute toxicity of the drug, experimental and control groups of whites were formed. Wistar rats weighing 190.2±5.92 grams. To study the acute toxicity of the drug based on toltrazuril, tinidazole and levamisole hydrochloride, a suspension was prepared using the Polysorbate 80 emulsifier. The prepared suspension in different dosages was administered through an intragastric tube to experimental animals and an equal volume of physiological saline was administered to the control group of white rats. With the introduction of a drug based on toltrazuril, tinidazole and levamisole hydrochloride at a dose of 3745 mg/kg, the death of two rats was recorded, which is 20% of the experimental group No. 5. With the introduction of the drug at a dose of 5350 mg/kg, 5 dead animals or 50% of experimental group No. 8 were registered, and with the introduction of 6420 mg/kg - 10 dead laboratory animals, i.e. all animals of the experimental group No. 10. When registering the body weight of white rats of the experimental and control groups, no statistically significant differences were found in the indicators for the entire observation period. At the same time, it should be noted that in the groups of experimental laboratory animals in which the drug was tested at a dose of 3745 mg/kg to 5885 mg/kg, lower values of body weight gain were established in comparison with the control. The minimum tolerated dose was found to be 3210.0 mg/kg, LD16 - 3679.7 mg/kg, LD50 - 5029.0 mg/kg, LD84 - 6121.5 mg/kg, LD100 - 6420.0 mg/kg and SLD50 - ±406. The data obtained allow us to proceed to the study of subchronic toxicity and irritant action of the developed drug.
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