Comparison of Diffusion Studies of Hydrocortisone Between the Franz Cell and the Enhancer Cell

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Abstract
The Franz diffusion cell remains a popular method to study diffusion of transdermal drug delivery systems through membranes. Recently, VanKel Industries, Inc., (Edison, NJ) developed the “Enhancer Cell,” a new device for in vitro transdermal drug diffusion testing. The purpose of this study was to evaluate the enhancer cell for in vitro transdermal diffusion of hydrocortisone from an ointment using a synthetic membrane and a biological membrane and compare it to the traditionally employed Franz cell. The Enhancer cell utilizes existing USP dissolution equipment (USP Apparatus II). Results show a higher cumulative release from the Enhancer cell as compared to the Franz cell. The Enhancer cell demonstrated more durability and was easier to use during experimentation and after completion of the experiment no apparent change was observed in the condition of the ointment or the skin when compared to the Franz cell.

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