Introduction: Oral route is the most common and convenient route to deliver the drug. Many oral drug delivery systems were developed to improve drug bio availability; gastro retentive drug delivery system is one of them. Gastroretentive drug delivery system is the system in which a drug can remain in the gastric region for several hours in order to prolong its gastric residence time. The purpose of this work was to develop and evaluate rebamipide loaded gastro retentive alginate based muco adhesive beads. Materials and Methods: Rebamipide loaded alginate beads were prepared by ionotropic gelation and polyelectrolyte complexation method. Prepared beads were characterized for IR, DSC, SEM and evaluated for dissolution and stability studies. Results: The FTIR spectra revealed that there were no interaction between drug and excipients. The particle size analysis showed that beads with 3% of sodium alginate were spherical in shape. The mucoadhesion study reveals that as concentration of alginate and carbopol 934 increases percentage of mucoadhesion also increases. Conclusion: From in-vivo study it was concluded that the prepared formulation showed better control on ulcer than that of pure rebamipide. Rebamipide was successfully formulated as gastroretentive floating and mucoadhesive alginate beads by using ionotropic gelation and polyelectrolyte complexation method.
Objective: The objectives of present investigation were to prepare and evaluate proniosomes of neomycin sulphate (NS) by coacervation phase separation method by using sorbitan monostearate (span 60) and lecithin as a surfactant to increase the penetration through the skin and study the effect of concentration of the same.
Methods: Proniosomes of neomycin sulphate (NS) were prepared by coacervation phase separation method by using span 60 and lecithin. The effect of concentration of span 60 and lecithin was studied by factorial design. The prepared proniosomes were converted to gel by using carbopol as a gelling agent. The prepared formulations were evaluated for entrapment efficiency, in vitro drug diffusion, in vitro antibacterial activity and in vivo skin irritation test etc.
Results: All Formulation showed the percentage entrapment efficiency in the range 38.31±0.05% to 77.96±0.06%, good homogeneity and gel was easily spreadable with minimal of shear. Optimized formulation showed enhanced rate of diffusion in vitro, increase in zone of inhibition against staphylococcus aureus, no skin irritation and showed good stability.
Conclusion: The results of present study indicates that proniosomal gel formulated by using combination of span 60, Lecithin, cholesterol can be used to enhance skin delivery of NS because of excellent permeation of drug. Developed proniosomal gel formulation was promising carrier for NS
The objectives of present investigation were to prepare and evaluate liquid crystalline gel, study the effect of water concentration on liquid crystalline phases, incorporate antifungal agent and itraconazole (ITZ) co-crystals into liquid crystalline vehicle. Liquid crystalline gel formulations were prepared by using glyceryl mono-oleate GMO, water and other excipients. The prepared gel formulations were evaluated for various parameters like rheological, in vitro drug diffusion and in vivo skin irritation test etc. Differential scanning calorimetric spectra of ITZ loaded gel showed higher transition peak temperature 96.71oC and ITZ loaded co-crystal gel showed 99.2oC and pH 6.8 and 6.5 respectively. Enhanced rate of diffusion was observed when gels were loaded with co-crystals. The prepared liquid crystalline gel formulations containing itraconazole and its co-crystals were found useful in a topical delivery with improvement for in vitro and in vivo performance.
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