EVALUATION OF A SELF-EMULSIFYING DRUG DELIVERY SYSTEM (SEDDS) FOR DICLOFENAC POTASSIUM USING PALM OIL
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Abstract
Background: Self emulsifying drug delivery systems (SEDDS) offer a means of enhancing the bioavailability and therapeutic efficacy of drugs with poor water solubility. The aim of this study is to formulate and evaluate a self emulsifying drug delivery system of diclofenac potassium using palm oil as the lipid phase.
Method: Five batches of SEDDS labelled B1, B2, B3, B4, B5 were prepared by incorporating diclofenac potassium in SEDDS bases of palm oil and Tween 80 at varying component ratios. The resulting formulations were evaluated for their self-emulsification performance upon dilution with water by visual inspection and classified according to standard emulsion grading criteria (Grade A, B, or C). They were evaluated for their stability and Absorbance values.
Result: The emulsification performance demonstrated significant variability across the batches, with Batch B1 successfully forming a highly stable Grade A emulsion, indicating rapid and fine self-microemulsification. Conversely, Batches B2 and B3 yielded a satisfactory Grade B emulsion, whereas Batches B4 and B5 resulted in a milky Grade C emulsion, signifying poor emulsification performance. Batches B1, B2 and B3 showed stability,while batches B4 and B5 showed poor stability. The batches had absorbance values which ranged from 0.579 ±0.006 to 0.713 ±0.004 showing considerable drug entrapment.
Conclusion: The optimal performance of Batch B1 confirms that diclofenac potassium can be successfully formulated into a stable SEDDS using palm oil, providing a practical, scalable, and effective strategy for enhanced in vitro dissolution and potential clinical application.
Method: Five batches of SEDDS labelled B1, B2, B3, B4, B5 were prepared by incorporating diclofenac potassium in SEDDS bases of palm oil and Tween 80 at varying component ratios. The resulting formulations were evaluated for their self-emulsification performance upon dilution with water by visual inspection and classified according to standard emulsion grading criteria (Grade A, B, or C). They were evaluated for their stability and Absorbance values.
Result: The emulsification performance demonstrated significant variability across the batches, with Batch B1 successfully forming a highly stable Grade A emulsion, indicating rapid and fine self-microemulsification. Conversely, Batches B2 and B3 yielded a satisfactory Grade B emulsion, whereas Batches B4 and B5 resulted in a milky Grade C emulsion, signifying poor emulsification performance. Batches B1, B2 and B3 showed stability,while batches B4 and B5 showed poor stability. The batches had absorbance values which ranged from 0.579 ±0.006 to 0.713 ±0.004 showing considerable drug entrapment.
Conclusion: The optimal performance of Batch B1 confirms that diclofenac potassium can be successfully formulated into a stable SEDDS using palm oil, providing a practical, scalable, and effective strategy for enhanced in vitro dissolution and potential clinical application.
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