Design of a gastroretentive mucoadhesive dosage form of furosemide for controlled release  

作　　者：Sharad S.Darandale Pradeep R.Vavia 

机构地区：[1]Department of Pharmaceutical Sciences and Technology,Institute of Chemical Technology,Mumbai 400019,India

出　　处：《Acta Pharmaceutica Sinica B》2012年第5期509-517,共9页药学学报（英文版）

摘　　要：The aim of the present study was to develop and characterize a gastroretentive dosage form suitable for controlled drug release.It consists of a drug loaded polymeric film made up of a bilayer of immediate(IR)and controlled release(CR)layers folded into a hard gelatin capsule.Gast roretention results from unfolding and swelling of the film and its bioadhesion to the gastric.mucosa.Furosemide,a drug with a narrow absorption window,was selected as the model drug.Inclusion of hydroxypropyl β-cyclodextrin in both layers and Carbopol■ 971P NF in the CR layer of the bilayer film resulted in optimum drug release,bioadhesion and mechanical properties.The film with zig-zag folding in the capsule was shown to unfold and swell under acidic conditions and provide IR of drugover 1 hand CR for up to 12 h in acidic medium.X-ray diffraction,differential scanning calorimetry and scanning electron microscopy revealed uniform dispersion of furosemide in the polymeric matrices.The results indicate the dosage form is gastroretentive and can provide controlled release of drugs with narrow therapeutic wind ows.

关 键 词：Gastroretentive dosage form Controlled release FUROSEMIDE BIOADHESION Bilayer film Hydroxypropylβ-cyclodextrin CARBOPOL 

分 类 号：R96[医药卫生—药理学]