Optimization of the sonication process for meloxicam nanocrystals preparation

Area of Science:

• Pharmaceutical Technology
• Materials Science

Background:

• Meloxicam, a non-steroidal anti-inflammatory drug (NSAID), exhibits poor water solubility, hindering its bioavailability and therapeutic efficacy.
• Nanocrystal technology offers a promising approach to enhance the solubility and dissolution rate of poorly soluble drugs like meloxicam.

Purpose of the Study:

• To investigate and optimize critical sonication parameters for the efficient preparation of meloxicam nanocrystals.
• To understand the influence of sonication variables on meloxicam nanocrystal size, polydispersity, and dissolution characteristics.

Main Methods:

• A central composite experimental design was employed to study the effects of sonication amplitude, time, and cycle on nanocrystal properties.
• Mathematical models were utilized to analyze the impact of each parameter on crystal size and dissolution rates.

Main Results:

• Sonication amplitude and time were identified as the most influential parameters for achieving significant size reduction and homogeneity.
• Smaller meloxicam crystals correlated strongly with enhanced dissolution rates after freeze-drying the nanosuspensions.
• Optimal sonication conditions (100% amplitude, 45 minutes, cycle 1) yielded 600 nm crystals with a 0.521 polydispersity index.

Conclusions:

• The study successfully identified optimal sonication conditions for producing meloxicam nanosuspensions with improved dissolution capacity.
• These findings provide a foundation for developing more bioavailable meloxicam formulations using sonication-assisted nanocrystallization.