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Updated: Jul 5, 2026
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Self-Nanoemulsification of Healthy Oils to Enhance the Solubility of Lipophilic Drugs
Published on: July 27, 2022
Exemestane loaded self-microemulsifying drug delivery system (SMEDDS): development and optimization
Ajeet K Singh1, Akash Chaurasiya, Manish Singh
1Dabur Research Foundation, Plot No. 22, Site -IV, Sahibabad, Ghaziabad, Uttar Pradesh 201010, India. ajeetrj@rediffmail.com
AAPS Pharmscitech
|May 14, 2008
Summary
This study developed self-microemulsifying drug delivery systems (SMEDDS) for exemestane. The optimized SMEDDS formulation (ME4) demonstrated excellent clarity and solubilization, indicating potential for enhancing exemestane dissolution.
Area of Science:
- Pharmaceutical Sciences
- Drug Delivery Systems
- Nanotechnology
Background:
- Exemestane, a lipophilic drug, often faces challenges with poor solubility and bioavailability.
- Self-microemulsifying drug delivery systems (SMEDDS) offer a promising approach to enhance the solubility and absorption of lipophilic drugs.
Purpose of the Study:
- To formulate and characterize novel self-microemulsifying drug delivery systems (SMEDDS) for exemestane.
- To evaluate the physicochemical properties and stability of the developed SMEDDS formulations.
- To assess the potential of SMEDDS for improving exemestane dissolution and bioavailability.
Main Methods:
- Solubility studies of exemestane in various excipients.
- Construction of pseudo-ternary phase diagrams to identify microemulsion regions.
- Characterization of SMEDDS formulations including globule size, zeta potential, clarity, and phase separation.
- Thermodynamic stability, thermal stability, and long-term stability studies under ICH guidelines.
- Transmission Electron Microscopy (TEM) for globule morphology analysis.
Main Results:
- Exemestane solubility was successfully enhanced in selected vehicles.
- Optimized SMEDDS formulations exhibited good microemulsifying properties with spherical globule morphology.
- Formulation ME4 showed superior clarity and solubilization capacity, even at high oil concentrations.
- SMEDDS formulations demonstrated excellent thermodynamic and long-term stability over three months.
- Droplet size was found to be proportional to oil concentration in the SMEDDS.
Conclusions:
- Self-microemulsifying drug delivery systems (SMEDDS) are effective carriers for enhancing the dissolution of exemestane.
- The optimized SMEDDS formulation (ME4) presents a viable strategy for improving the delivery of lipophilic drugs.
- This research highlights the potential of SMEDDS in overcoming solubility limitations for drugs like exemestane.
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