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Formulation and Evaluation of Mucoadhesive in-Situ Nasal Gel of Tapentadol Hydrochloride

Reema B. Gotmare,R. S. Kushwaha,Neeraj K. Sharma

Published 2021 in Research Journal of Pharmaceutical Dosage Forms and Technology

ABSTRACT

Tapentadol Hydrochloride is a Tapentadol is a centrally acting analgesic. It has 33% bioavailability due to its first pass effect and hence possesses problems in the development of oral sustained release formulations. Mucoadhesive thermo reversible in-situ nasal gel of Tapentadol HCl was designed and developed to sustain its release due to the increased nasal residence time of the formulation. Poloxamer 407 (PF 127) was selected as it has excellent thermo sensitive gelling properties. HPMCK4M was added to impart mucoadhesive to the formulation, and PEG 400 was used to enhance the drug release. 32 Factorial designs were employed to assess the effect of concentration of HPMCK4M and PEG 400 on the performance of in-situ nasal gel systematically and to optimize the formulation. An optimized in-situ nasal gel was evaluated for appearance, pH, drug content, gelation temperature, mucoadhesive force, viscosity and ex-vivo permeability of drug through nasal mucosa of a goat. Additionally, this formulation was proved to be safe as histopathological studies revealed no deleterious effect on nasal mucosa of a goat after prolonged exposure of 21 days to the optimized formulation. Thus the release of Tapentadol Hydrochloride can be sustained if formulated in an in-situ nasal gel containing poloxamer 407 to achieve its prolonged action.

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