Mulugeta Fentie
School of Pharmacy,
P. O. Box 1176, Addis Ababa
Ethiopia
Research Article
Formulation of Sustained Release Floating Microspheres of Furosemide
from Ethylcellulose and Hydroxypropyl Methylcellulose Polymer Blends
Author(s): Mulugeta Fentie, Anteneh Belete and Tsige Gebre-Mariam
Mulugeta Fentie, Anteneh Belete and Tsige Gebre-Mariam
Furosemide is a potent and commonly used loop diuretic. It is absorbed largely in the stomach and upper small intestine. This narrow absorption window is responsible for its low bioavailability of about 50%, and variable and erratic absorption. The objective of the present investigation was to formulate and evaluate floating microspheres of furosemide for prolonged buoyancy with sustained delivery of the drug into the gastric content. Furosemide loaded microspheres were prepared by the solvent evaporation method. The drug entrapment efficiency was high for all of the formulations ranging from 86.2 to 98.4%. The yield of microspheres production was good partticularly at increased EC/HPMC ratio and lower temperatures. Drug amount and EC/HPMC ratio showed highly significant effects (p<0.0001) on cumulative drug release and buoyancy of microspheres. Fl.. View More»
DOI:
10.4172/2157-7439.1000262