Preparation and evaluation of ciprofloxacin solid dispersion tablets developed from stearic acid, Polyethylene Glycol 4000 and Soluplus
Abstract
Ciprofloxacin is a fluoroquinolone antibiotic with a broad spectrum of activity used for the treatment of various bacterial infections and is characterized by poor aqueous solubility and low permeability. The aim of this study is to formulate and characterize ciprofloxacin solid dispersions using hydrophilic and lipophilic matrices for improved product qualities and drug delivery. Ciprofloxacin hydrochloride tablets were formulated as solid dispersions by melting and solvent evaporation in tablet moulds using varying concentrations of stearic acid (10-40 %w/w), Polyethylene glycol 4000 (PEG 4000) (10-40 %w/w) and Soluplus® (10-20 %w/w as ethanolic solution) as components. The prepared tablets were evaluated for weight uniformity, friability, hardness, Fourier transform-infrared spectroscopy (FT-IR), moisture uptake, swelling index, disintegration time and dissolution rate, using standard methods and optimization techniques. The results showed uniform solid dispersion weights with friability, hardness, moisture uptake and swelling index of 0.4-0.5%, 3.0-7.5 kgf, mostly <20% and 1-71%, respectively. The formulations were chemically stable with no transformational interactions between components. Formulations without stearic acid disintegrated within 30 min whereas those containing the lipid broke up after more than 1 h. Drug release studies showed high immediate release in tablets without stearic acid but with cumulative steady state release higher in formulations with 10 %w/w Soluplus and different concentrations of stearic acid and PEG 4000. In conclusion, ciprofloxacin was presented as solid dispersion tablets with modified physicochemical attributes for improved drug delivery.
Keywords: Ciprofloxacin; solid dispersion; drug delivery
Keywords:
Ciprofloxacin, solid dispersion, drug deliveryDOI
https://doi.org/10.22270/jddt.v13i4.5799References
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