Acta Pharmaceutica, Vol. 54 No. 4, 2004.
Original scientific paper
Design and in vitro evaluation of new drug-in-adhesive formulations of fentanyl transdermal patches
AMIR MEHDIZADEH
TAYEBE TOLIATE
MOHAMMAD REZA ROUINI
SHARYAR ABASHZADEH
FARID DORKOOSH
Abstract
The present research was designed to evaluate different matrix, drug-in-adhesive and reservoir formulations of fentanyl transdermal patches. The target was to design drug-in-adhesive patches (DIAPs); a full factorial design was used. Different types and amounts of liquid, pressure-sensitive adhesives (PSAs) were used and evaluated with respect to drug release and adhesive properties. A very simple but precise method, the simplified peel 180° test, was developed to measure and compare adhesive properties of transdermal patches. The results showed that release kinetics obeyed the square root of time or Higuchi model, indicating the diffusion controlled release mechanism. It was found that the amount of fentanyl needed for each 10 cm2 three-days DIAP should be 3.3 mg. The respective amounts for reservoir and matrix patches were 2.5 and 5 mg. It was concluded that acrylic PSAs showed the best adhesion and release properties.
Keywords
fentanyl; transdermal drug delivery systems; patches; drug release
Hrčak ID:
16906
URI
Publication date:
1.12.2004.
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