Development and characterization of microemulsion containing antihypertensive agent using factorial design

Area of Science:

• Pharmaceutical Sciences
• Drug Delivery Systems

Background:

• Poorly water-soluble drugs present significant formulation challenges.
• Microemulsions offer potential as effective drug carriers due to their unique properties.

Purpose of the Study:

• To formulate and optimize microemulsions for enhanced delivery of poorly soluble drugs.
• To investigate the influence of oil and surfactant concentrations on microemulsion characteristics.

Main Methods:

• Phase behavior studies were conducted using isopropyl myristate, cremophor-el, propylene glycol, and water.
• A 2(2) Full Factorial Design was employed, with % oil and % surfactant as independent variables.
• Particle size and viscosity were analyzed as dependent variables.

Main Results:

• A stable microemulsion region was identified based on phase diagrams.
• The optimized microemulsion formulation demonstrated improved drug dissolution.
• Key formulation parameters were optimized using statistical design.

Conclusions:

• Microemulsions can effectively overcome the dissolution barrier for poorly soluble drugs.
• The developed microemulsions facilitate improved drug formulation and administration.
• This approach offers a viable strategy for enhancing the bioavailability of challenging drug compounds.