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  • Title: FORMULATION AND EVALUATION OF MICROSPHERES CONTAINING LOSARTAN POTASSIUM BY SPRAY-DRYING TECHNIQUE.
    Author: Balwierz R, Jankowski A, Jasinska A, Marciniak D, Pluta J.
    Journal: Acta Pol Pharm; 2016 Sep; 73(5):1275-1286. PubMed ID: 29638068.
    Abstract:
    Despite numerous applications of microspheres, few works devoted to the preparation of microspheres containing cardiac medications have been published. This study presents the potential of receiving microspheres containing losartan potassium, based on a matrix containing Eudragit L30D55. The study focuses on the possibilities of controlled release of losartan potassium from microspheres in order to reduce the dosage frequency, and also provides information on the effect of the addition of excipients to the quality of the microspheres. Microspheres are monolithic, porous or smooth microparticles ranging from 1 to 500 microns in size. For the preparation of microspheres containing losartan potassium, the spray-drying method was used. The performed study confirmed that the spray-drying technology used to obtain microspheres meets the criteria of size and morphology of the microparticles. The assessment of the kinetics of losartan potassium release from the examined microspheres demonstrated that the release profile followed the first- and/or zero-order kinetics. The use of spray-drying techniques as well as Eudragit L30D55 polymer matrix to obtain the microspheres containing losartan potassium makes it possible to obtain a product with the required particle morphology and particle size ensuring the release of the active substance up to 12 h.
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