Gelrite-Based In situ Gel for the Nasal Delivery

Gelrite-Based In situ Gel for the Nasal Delivery

Formulation & Characterization of In-situ Gels for Nasal Delivery of Salbutamol Sulfate

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Salbutamol sulfate (SS), a direct acting sympathomimetic; used for the treatment of acute and chronic asthma, was formulated as gelerite® in-situ gels. SS in-situ gels (2% w/w) were prepared at concentration of gellan gum 0.2%, 0.4% and 0.8% w/v with methyl paraben (0.05%) as preservative. In-vitro release in simulated nasal fluid showed relatively fast release and release kinetics followed diffusion kinetic model. In-vivo mucoadhesiveness test performed in rats, showed prolonged mucociliary transport time from 5 min (control solution) to 16.5 and 19.5 minutes for formulations containing 0.4%...