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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Allergy</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Allergy</journal-title><trans-title-group xml:lang="ru"><trans-title>Российский Аллергологический Журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1810-8830</issn><issn publication-format="electronic">2686-682X</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">7525</article-id><article-id pub-id-type="doi">10.36691/RJA7525</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original studies</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные исследования</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">A bioequivalence study of Allergostin compared to administration of Kestin in healthy volunteers</article-title><trans-title-group xml:lang="ru"><trans-title>Исследование фармакокинетики и биоэквивалентности препарата Аллергостин в сравнении с препаратом Кестин при однократном приёме у здоровых добровольцев</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2503-4402</contrib-id><contrib-id contrib-id-type="spin">1459-5548</contrib-id><name-alternatives><name xml:lang="en"><surname>Vasilyuk</surname><given-names>Vasiliy B.</given-names></name><name xml:lang="ru"><surname>Василюк</surname><given-names>Василий Богданович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Med.), Professor</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор</p></bio><email>vasilyuk_vb@ecosafety.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4212-5453</contrib-id><contrib-id contrib-id-type="spin">9006-2074</contrib-id><name-alternatives><name xml:lang="en"><surname>Faraponova</surname><given-names>Mariia V.</given-names></name><name xml:lang="ru"><surname>Фарапонова</surname><given-names>Мария Валерьевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>faraponova_mv@ecosafety.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4029-3170</contrib-id><contrib-id contrib-id-type="spin">5448-0433</contrib-id><name-alternatives><name xml:lang="en"><surname>Verveda</surname><given-names>Aleksey B.</given-names></name><name xml:lang="ru"><surname>Верведа</surname><given-names>Алексей Борисович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>verveda_ab@ecosafety.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9640-7168</contrib-id><contrib-id contrib-id-type="spin">8550-5610</contrib-id><name-alternatives><name xml:lang="en"><surname>Fomichev</surname><given-names>Aleksey V.</given-names></name><name xml:lang="ru"><surname>Фомичев</surname><given-names>Алексей Вячеславович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>fomichev_av@ecosafety.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6635-9786</contrib-id><contrib-id contrib-id-type="spin">9650-5671</contrib-id><name-alternatives><name xml:lang="en"><surname>Syraeva</surname><given-names>Gulnara I.</given-names></name><name xml:lang="ru"><surname>Сыраева</surname><given-names>Гульнара Ислямовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>syraeva_gi@ecosafety.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3695-2671</contrib-id><contrib-id contrib-id-type="spin">7216-8364</contrib-id><name-alternatives><name xml:lang="en"><surname>Kovalenko</surname><given-names>Aleksey L.</given-names></name><name xml:lang="ru"><surname>Коваленко</surname><given-names>Алексей Леонидович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Biol.), Cand. Sci. (Chem.)</p></bio><bio xml:lang="ru"><p>д-р биол. наук, канд. хим. наук</p></bio><email>alleokov@mail.ru</email><xref ref-type="aff" rid="aff5"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">The Limited Liability Company “Research Center Eco-safety”</institution></aff><aff><institution xml:lang="ru">Научно-исследовательский центр «Эко-безопасность»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">North-Western State Medical University named after I.I. Mechnikov</institution></aff><aff><institution xml:lang="ru">Северо-Западный государственный медицинский университет имени И.И. Мечникова</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Research Institute of Industrial and Maritime Medicine of Federal Medical Biological Agency</institution></aff><aff><institution xml:lang="ru">Научно-исследовательский институт промышленной и морской медицины</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Academician I.P. Pavlov First St. Petersburg State Medical University</institution></aff><aff><institution xml:lang="ru">Первый Санкт-Петербургский государственный медицинский университет имени академика И.П. Павлова</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Golikov Research Clinical Center of Toxicology</institution></aff><aff><institution xml:lang="ru">Научно-клинический центр токсикологии имени академика С.Н. Голикова</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2023-05-15" publication-format="electronic"><day>15</day><month>05</month><year>2023</year></pub-date><pub-date date-type="pub" iso-8601-date="2023-07-09" publication-format="electronic"><day>09</day><month>07</month><year>2023</year></pub-date><volume>20</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>143</fpage><lpage>151</lpage><history><date date-type="received" iso-8601-date="2023-03-09"><day>09</day><month>03</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-04-03"><day>03</day><month>04</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Pharmarus Print Media</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Фармарус Принт Медиа</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Pharmarus Print Media</copyright-holder><copyright-holder xml:lang="ru">Фармарус Принт Медиа</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2025-07-09"/></permissions><self-uri xlink:href="https://rusalljournal.ru/raj/article/view/7525">https://rusalljournal.ru/raj/article/view/7525</self-uri><abstract xml:lang="en"><p><bold><italic>BACKGROUND</italic></bold><italic>:</italic> Ebastine is widely used in medical practice for treating urticaria and allergic rhinitis. This compound is an antiallergic drug that belongs to the second generation of H<sub>1</sub> histamine receptor blockers. The effectiveness of ebastine can be observed when it is orally administered. As a part of the registration of the trade name Allergostin, a clinical study of its bioequivalence with Kestin was conducted involving 26 healthy volunteers.</p> <p><bold><italic>AIM</italic></bold><italic>:</italic> To summarize the results of the clinical study of the comparative pharmacokinetics and bioequivalence, safety, and the tolerability of Allergostin (film-coated tablets, 20 mg; NTFF POLYSAN LLC, Russia) and Kestin (film-coated tablets, 20 mg; Almirall S.A., Spain) among healthy volunteers after a single oral dose on an empty stomach.</p> <p><bold><italic>MATERIALS AND METHODS</italic></bold><italic>:</italic> To confirm bioequivalence, we conducted an open, randomized, two-period crossover study of comparative pharmacokinetics and bioequivalence of drugs with a single oral administration on an empty stomach in healthy male and female volunteers aged ≥18. During the study, blood plasma samples were collected from volunteers. Each sample was tested using a validated high-performance liquid chromatography with tandem mass spectrometry method, and the concentrations of ebastine and the active metabolite carabastin were determined. Based on the obtained data, pharmacokinetic and statistical analyses were carried out, and 90% confidence intervals were calculated for the ratio of the geometric mean values of the pharmacokinetic parameters C<sub>max</sub> and AUC<sub>0-72</sub> for carabastin.</p> <p><bold><italic>RESULTS</italic></bold><italic>:</italic> Based on the results of statistical analysis, the pharmacokinetic parameters of the test (Allergostin) and reference (Kestin) drugs were characterized by high similarity. For the estimated pharmacokinetic parameters of carabastin, the 90% confidence intervals ranged from 80% to 125% for AUC<sub>0-t</sub> and C<sub>max</sub>.</p> <p><bold><italic>CONCLUSION</italic></bold><italic>:</italic> Therefore, in accordance with the applied criteria, the drugs are recognized as bioequivalent.</p></abstract><trans-abstract xml:lang="ru"><p><bold><italic>Обоснование</italic></bold><italic>.</italic> Эбастин широко используется в клинической практике при терапии крапивницы и аллергическом рините. Он является противоаллергическим лекарственным средством, которое относится ко второму поколению лекарственных препаратов фармакотерапевтической группы блокаторов H<sub>1</sub>-гистаминовых рецепторов и эффективен при приёме внутрь. В рамках регистрации воспроизведённого препарата Аллергостин было проведено исследование его биоэквивалентности оригинальному препарату Кестин. В исследовании приняли участие 26 здоровых субъектов.</p> <p><bold><italic>Цель</italic></bold> ― сравнительная оценка фармакокинетики и биоэквивалентности препаратов отечественного (Аллергостин, таблетки, покрытые плёночной оболочкой, 20 мг) и зарубежного производителя (Кестин, таблетки, покрытые плёночной оболочкой, 20 мг) у здоровых субъектов исследования после однократного приёма внутрь натощак.</p> <p><bold><italic>Материалы и методы</italic></bold><italic>.</italic> Выполнено открытое рандомизированное двухпериодное перекрёстное сравнительное исследование фармакокинетики и биоэквивалентности препаратов при однократном приёме внутрь натощак у взрослых здоровых добровольцев мужского и женского пола. В ходе исследования в образцах плазмы крови добровольцев определяли концентрации эбастина и его активного метаболита карэбастина с помощью валидированной высокоэффективной жидкостной хроматографии с тандемным масс-спектрометрическим детектированием. Исходя из полученных данных, проведён фармакокинетический и статистический анализ, рассчитаны 90% доверительные интервалы (ДИ) для отношения средних геометрических значений фармакокинетических параметров C<sub>max</sub> и AUC<sub>0-72</sub> по карэбастину.</p> <p><bold><italic>Результаты</italic></bold><italic>.</italic> Статистический анализ показал, что фармакокинетические параметры тестируемого (Аллергостин) и референтного (Кестин) препаратов характеризуются высоким сходством. Для оцениваемых фармакокинетических параметров карэбастина 90% ДИ находились в пределах от 80 до 125% для AUC<sub>0-t</sub> и C<sub>max</sub>.</p> <p><bold><italic>Заключение</italic></bold><italic>.</italic> По результатам данного исследования можно заключить, что воспроизведённый и референтный препараты эбастина биоэквивалентны и обладают сходными профилями безопасности.</p></trans-abstract><kwd-group xml:lang="en"><kwd>ebastine</kwd><kwd>Allergostin</kwd><kwd>pharmacokinetics</kwd><kwd>bioequivalence</kwd><kwd>safety</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>эбастин</kwd><kwd>Аллергостин</kwd><kwd>фармакокинетика</kwd><kwd>биоэквивалентность</kwd><kwd>безопасность</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Danilycheva IV, Ilyina NI, Luss LV, et al.; Russian Association of Allergologists and Clinical Immunologists. Urticaria. Federal clinical guidelines. 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