The study of the broncholytic effect of “Bronchosten” extract

Despite the substantial progress achieved in prevention and treatment, acute respiratory diseases remain massively widespread with their share in the overall structure of infection diseases reaching 90–95 %. Therefore, the creation of new medicines for treating them persists in importance and relevance. Currently, the medicines of plant origin producing secretolytic and broncholytic effects perform sufficiently well. An advantage of herbal medicines compared to the synthetic ones is in their low toxicity; they do not give significant side effects with long-term use, and natural complexes of substances are close to the human body.Аim. to study the broncholytic effect of a new “Bronchosten” extract developed at the Department of Pharmaceutical Drug Technology of theNationalUniversity of Pharmacy. Materials and methods. The ability of the combined medicine under the conditional name “Bronchosten” to produce a bronchodilatory effect was studied on the model of acute bronchospasm induced by an aerosol intervention of 1 % histamine solution in guinea pigs. Results. The broncholytic effect was assessed by the ability of the extract studied to reduce sneezing, coughing, and dyspnea compared to guinea pigs of the positive control group. The highest overall broncholytic activity was detected when “Bronchosten” extract was injected to the animals in the dose of 100 mg/kg. The effectiveness of this dose by its broncholytic effect was 10 % higher than the reference tablets “Bronchipret” in the theurapetic dose of 40 mg/kg. Conclusions. Therefore, in the dose of 100 mg/kg “Brochosten” exhibits a substantial broncholytic effect at the level of 52.2 %, and this dose can be proposed for further study and creation of a new broncholytic medication.