2 research outputs found

    Cyclophosphamide Sugar-coated Tablets

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    Treballs Finals de Grau de Farm脿cia, Facultat de Farm脿cia, Universitat de Barcelona, 2015. Tutor: Joaqu铆n Tejero Mart铆nez.[eng] Cyclophosphamide is a cytotoxic anti-tumor pro-drug belonging to the alkylating agents which is indicated for the treatment of many cancers as well as some immune-related disorders. In Spain, it is marketed as powder for injection and as sugar-coated tablets by Baxter Oncology. Cyclophosphamide is well absorbed from the gastrointestinal wall, with an oral bioavailability of 85-100%. This justifies the existence of an oral medication comprising the drug, like sugar-coated tablets. Cyclophosphamide structure is prone to undergo hydrolysis and other degradation reactions in aqueous solution, and is labile to high temperatures, changes in moisture levels, and light. Instability to the latter conditions might accelerate the degradation of the active ingredient during the manufacture of the drug product, and is one of the reasons for tablet coating. Accordingly, drug sensitivity to water and temperature are especially critical, since most manufacturing processes are carried out in aqueous medium and involve heating systems like hot air drying. Indeed, commercially available cyclophosphamide coated tablets are produced by means of a wet granulation process followed by coverage with the sugar-coating technique. Both of these methods are subjected to the use of water and to several drying stages, thus compromising the stability of the active ingredient. Hence, the main objective of this project has been to develop a novel formulation of cyclophosphamide coated tablets that minimized drug exposure to water and heat during the manufacturing process. As a result, sorbitol film-coated tablets have been proposed. These consist of a tablet core obtained by direct compression without the need of water, and a film-coating containing glycerol instead of water as the main coating solvent together with sorbitol as a plasticizer.[cat] La ciclofosfamida 茅s un prof脿rmac antitumoral citot貌xic pertanyent al grup dels agents alquilants que est脿 indicat en el tractament de nombrosos c脿ncers i algunes malalties del sistema immunitari. A Espanya es troba comercialitzada per Baxter Oncology en forma de p贸lvores per a soluci贸 injectable i com a dragees. La ciclofosfamida s鈥檃bsorbeix b茅 al tracte gastrointestinal, presentant una biodisponibilitat d鈥檈ntre el 85 i el 100%, la qual cosa justifica l鈥檈xist猫ncia d鈥檜na forma farmac猫utica d鈥檃dministraci贸 oral del f脿rmac com s贸n les dragees. L鈥檈structura de la ciclofosfamida 茅s propensa a patir hidr貌lisis i altres reaccions de degradaci贸 en soluci贸 aquosa, i 茅s l脿bil a les altes temperatures, als canvis d鈥檋umitat i a la llum. La inestabilitat del f脿rmac enfront a aquestes condicions podria accelerar la degradaci贸 del principi actiu durant la fabricaci贸 del medicament i 茅s una de les raons per a recobrir els comprimits. En aquest sentit, la inestabilitat a l鈥檃igua i a la temperatura s贸n especialment cr铆tiques, ja que la majoria de processos de fabricaci贸 es realitzen en medi aqu贸s i impliquen l鈥檈scalfament del f脿rmac per mitj脿 de sistemes com l鈥檃ssecament amb aire calent. De fet, les dragees de ciclofosfamida disponibles al mercat es fabriquen a trav茅s d鈥檜n proc茅s de granulaci贸 per via humida seguit de drageat o recobriment amb sacarosa. Aquests dos m猫todes requereixen l鈥櫭簊 d鈥檃igua i de varies etapes d鈥檃ssecat, la qual cosa pot comprometre l鈥檈stabilitat del principi actiu. En conseq眉猫ncia, el principal objectiu d鈥檃quest treball ha estat desenvolupar una nova formulaci贸 de comprimits de ciclofosfamida recoberts que minimitz茅s l鈥檈xposici贸 del f脿rmac a l鈥檃igua i la calor durant el proc茅s de fabricaci贸. Com a resultat, s鈥檋an proposat uns comprimits amb recobriment pel路licular de sorbitol. Aquests estan formats per un nucli obtingut per compressi贸 directa sense necessitat d鈥檃igua, i una cobertura pel路licular amb glicerol enlloc d鈥檃igua com a solvent principal juntament amb sorbitol com a plastificant

    Educaci贸 farmac猫utica en el tractament de l'obesitat

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    Treballs d'Educaci贸 Farmac猫utica als ciutadans. Unitat Docent d'Estades en Pr脿ctiques Tutelades. Facultat de Farm脿cia, Universitat de Barcelona. Curs: 2015-2016. Tutores: Gemma Trib贸 i Marian March Pujol
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