Establishing the formulation of 0.1% diclofenac eye drops

ABSTRACT

Establishing the formulation of 0.1% diclofenac eye drops by making up solution and quantitative by High- Performance Liquid Chromatography (HPLC). Results: Natri diclofenac eye drop 0.1% mixing with phosphate buffer 0.05M get the most stability at pH=7.5. The percentage of propylene glycol and natrimetabisulfit in the formulation influenced significantly the stability of eye drop solution. The stability increased gradually if the rates of natri metabisulfit antioxygen are 0.1%; 0.2% and 0.3% or there was an increase of propylene glycol with the rate of 0%, 5% and 10%. This preparation is stable at least 5 months at temperature 50oC and protected from light. This preparation may be stable more than 20 months at room conditions 30oC and protected from light