Verification of dissolution test for doxycycline hyclate in capsules to implement into the pharmacopoeial monograph
Journal Title: ScienceRise: Pharmaceutical Science - Year 2018, Vol 0, Issue 1
Abstract
<p>The study of dissolution profiles is important as a cheap and easy supplement to bioequivalence research, and as a variation to such studies. This method is not outlined in the State Pharmacopoeia of Ukraine for the doxycycline capsules. Therefore, according to the current requirements, it was necessary to verify the procedure recommended by the US Pharmacopeia to confirm that this laboratory test will be reproduced correctly, and to use it in our further studies.</p><p>The <strong>aim</strong> of our research was to verify the "Dissolution" test analytical procedure for doxycycline hyclate capsules, recommended by the US Pharmacopoeia.</p><p><strong>Methods. </strong>Capsules of doxycycline hyclate 100 mg and set of mineral waters were taken as study objects. A standard sample of doxycycline was used for preparation the comparison solutions. All reagents and test specimens meet the requirements of the SPhU. The experimental data were obtained at the same time in a standardized procedure. For this purpose, 9 points were studied within the range 55-135 % with a step of 10 %. The obtained results were processed statistically in accordance with the requirements of the SPhU.</p><p><strong>Results</strong>. The conducted prediction showed that the total uncertainty of the results of the methodic is 1.04 %, which does not exceed the critical value (3.0 %). To determine the specificity, the effect of placebo was investigated. The calculation showed that the overall effect of placebo on the total absorption of the drug is non-significant (0.51 % ≤ 0.96 %). Also, the method is linear in the range of concentrations from 55 % to 135 %. The systematic error of the results meets the recommended criteria.</p><p><strong>Conclusions. </strong>The analysis of model mixtures of doxycycline hyclate showed the correctness of the investigated method</p>
Authors and Affiliations
Anna Dobrova, Olga Golovchenko, Victoria Georgiyants
Исследование стабильности иринотекана при использовании различных методов активной загрузки липосом
<p>Рассмотрены механизмы активной инкапсуляции иринотекана в липосомы по технологиям «градиента рН» и технологии «градиента аммония».</p><p><strong>Цель работы:</strong> используя данные о механизме конверсии иринотекана...
Development of the method of simultaneous quantitative determination of loratadine and auxuilary substances in the combined syrup "Loratadin+"
<p><strong>Aim</strong>. The aim of the present study was to develop a method for the simultaneous determination of loratadine and auxiliary substances - methyl parahydroxybenzoate and propyl parahydroxybenzoate in the c...
Dynamics of exception of organic acids from mixture of medical vegetable raw material
<p><strong>Aim.</strong> Obtaining the mathematical equations for calculating the size of the parts to which different morphological organs of medicinal plants are to be chopped in order to achieve a required degree of e...
Оцінка однорідності гелю з екстрактів листя айви й шроту винограду на основі поліметилсилоксану з метою оптимізації та удосконалення технології
<p><strong>Мета. </strong>Оптимізування технології отримання гелю з екстрактами листя айви й шроту винограду на основі поліметилсилоксану для отримання якісного лікарського препарату з оптимальним терміном зберігання.</p...
Development of quality control methods of promising anticonvulsant
<p>In the previous studies, NUPh scientists proved that the search of potential anticonvulsants among derivatives of 1,3,4-thiadiazole is very perspective [1-3]. At the medicinal chemistry department of NUPh N-(5-ethyl-[...