AI Article Synopsis

  • The study aimed to create a topical gel for better skin absorption of lornoxicam (LOR) to boost its pain-relief effects.
  • The gel was made using hydroxylpropyl methylcellulose and carbopol, and various penetration enhancers were tested to see their impact on LOR absorption.
  • The optimized gel formulation (LORF8) achieved significantly better absorption and showed comparable pain-relief effectiveness to a marketed LOR injection.

Article Abstract

The current study was designed to develop a topical gel formulation for improved skin penetration of lornoxicam (LOR) for enhancement of its analgesic activity. Moreover, the effect of different penetration enhancers on LOR was studied. The LOR gel formulations were prepared by using hydroxylpropyl methylcellulose (HPMC) and carbopol. The carbopol gels in presence of propylene glycol (PG) and ethanol were developed. The formulated gels were characterized for pH, viscosity, and LOR release using Franz diffusion cells. Also, in vitro skin permeation of LOR was conducted. The effect of hydroxypropyl β-cyclodextrin (HP β-CD), beta-cyclodextrin (β-CD), Tween 80, and oleic acid on LOR permeation was evaluated. The optimized LOR gel formulation (LORF8) showed the highest flux (14.31 μg/cm(2)/h) with ER of 18.34 when compared to LORF3. Incorporation of PG and HP β-CD in gel formulation (LORF8) enhanced the permeation of LOR significantly. It was observed that LORF3 and LORF8 show similar analgesic activity compared to marketed LOR injection (Xefo). This work shows that LOR can be formulated into carbopol gel in presence of PG and HP β-CD and may be promising in enhancing permeation.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4089842PMC
http://dx.doi.org/10.1155/2014/127495DOI Listing

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