FORMULATION AND EVALUATION OF AN OPHTHALMIC IN-SITU GEL OF GENTAMICIN SULPHATE
Ashish Namdeo, Santosh Bhadkariya, Akanksha Garud*, Navneet Garud
ABSTRACT
The aim of the present study is to prepare and evaluate an ophthalmic
in-situ gel formulation of gentamicin sulphate. The different gelling
solutions were made with Pluronic F127 in combination with different
polymers such as Carbopol 934 and HPMC, which acted as
a viscosity‐enhancing agent. Suitable concentrations of buffering agent
were used for pH adjustment. All the formulations were sterilized in an
autoclave at 121°C for 15 minutes. The formulations were evaluated
for clarity, pH measurement, gelling capacity, drug content,
rheological study, sterility testing, in vitro drug release study,
antibacterial activity, ocular irritation study and stability study. The developed formulations
exhibited sustained release of drug from formulation over a period of 8 hours. The prepared
formulations were tested for eye irritation on albino rabbit (male). The formulations were
found to be non-irritating. Thus, the in situ gelling systems may be used as an alternative to
the conventional systems.
Keywords: Gentamicin sulphate, in situ gel, in vitro drug release, rheological study.
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