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Statistical Optimization of Sustained Release Venlafaxine HCI Wax Matrix Tablet
M R Bhalekar1, A R Madgulkar, D D Sheladiya
1AISSMS College of Pharmacy, Kennedy Road, Near RTO, Pune-411 001, India.
Indian Journal of Pharmaceutical Sciences
|January 5, 2010
Summary
This study developed a sustained release venlafaxine hydrochloride drug delivery system using a wax matrix. Beeswax and carnauba wax effectively controlled drug release, optimizing the delivery profile.
Area of Science:
- Pharmaceutical Sciences
- Materials Science
Background:
- Sustained release drug delivery systems aim to prolong medication effectiveness and reduce dosing frequency.
- Wax matrix systems offer potential for controlled drug release applications.
Purpose of the Study:
- To prepare a sustained release drug delivery system for venlafaxine hydrochloride using a wax matrix.
- To investigate the impact of beeswax and carnauba wax on the drug release profile.
- To optimize the drug release profile using a 3(2) full factorial design.
Main Methods:
- Preparation of venlafaxine hydrochloride sustained release formulations utilizing beeswax and carnauba wax.
- Application of a 3(2) full factorial design with carnauba wax (X1) and beeswax (X2) as independent variables.
- Evaluation of drug release after 12 hours and time for 50% drug release (t50) as dependent variables.
- Mathematical modeling and analysis of response surface and contour plots.
Main Results:
- Both beeswax and carnauba wax demonstrated a retarding effect on drug release after 12 hours and increased the time for 50% drug release (t50).
- Beeswax exhibited a more significant influence on the drug release kinetics compared to carnauba wax.
- Drug release patterns across all formulations approximated the Peppas kinetic model.
- Optimized formulations showed predicted results closely aligning with experimental findings.
Conclusions:
- A combination of beeswax and carnauba wax can create a well-regulated sustained release profile for venlafaxine hydrochloride.
- The factorial design effectively optimized the wax matrix system for controlled drug delivery.
- The developed wax matrix system holds promise for effective sustained release venlafaxine hydrochloride formulations.
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