Formulation and Evaluation of an In Situ Gel for Ocular Delivery.

      Аннотация: Norfloxacin ophthalmic solution has been shown to be effective ocular infections and may be used in patients with chronic conjunctivitis or ocular irritation. Norfloxacin in-situ gel was prepared using various concentrations of polymers such as Carbopol-940 (0., 0.2, 0.3 0.4and 0.5% w/v), HPMC- E50LV (1.5 % w/v), HPMC E4M (0.6 %w/v) and HPMC K4M (0.5% w/v) by pH triggered gelling system with an objectives of increasing contact time, achieving controlled release, reduction in frequency of administration and greater therapeutic efficacy of drug. The prepared in-situ gels were then evaluated for their visual appearance, clarity, pH, drug content analysis, in-vitro gelation (Gelling capacity), rheological studies, sterility testing, textureanalysis and in-vitro drug release studies. It is evident from these studies that, formed polymeric in-situ gels had transparent, clear possessing satisfactory gelling capacity. The developed formulation was light yellow in colour, therapeutically efficacious, stable, non irritant with sustained release of drug.

Ключевые слова: in situ gel, Ocular Delivery, anticonjectival drug