Physical Characterization and In Vitro Evaluation of Dissolution Rate from Cefpodoxime Proxetil Loaded Self...

Area of Science:

• Pharmaceutical Sciences
• Drug Delivery Systems
• Nanotechnology

Background:

• Cefpodoxime Proxetil (CPD) is a broad-spectrum cephalosporin with limited bioavailability due to its BCS class IV status and pH-dependent solubility.
• Developing effective delivery systems for CPD is crucial for improving its therapeutic efficacy in respiratory and urinary tract infections.

Purpose of the Study:

• To investigate the development of ternary components for self-solidifying solid nanoemulsions (S-SNEDDS) of Cefpodoxime Proxetil.
• To enhance the in vitro dissolution rate and evaluate the self-solidifying behavior of CPD-loaded S-SNEDDS.

Main Methods:

• Ternary phase diagrams were utilized to characterize the solidification behavior of components including surfactants (Tween 80), solvents (Transcutol), and solidifiers (PEG6000).
• Self-solidifying solid SNEDDS (S-SNEDDS) formulations were prepared within the identified solidification areas and characterized using FTIR, XRD, and DSC.
• In vitro drug release studies were conducted across various pH media to assess dissolution enhancement.

Main Results:

• FTIR and DSC confirmed the absence of drug-excipient interactions, while XRD indicated a transformation of CPD from crystalline to amorphous form within the S-SNEDDS.
• The optimized S-SNEDDS formulation (S-S 1) achieved over 95% drug release, independent of pH.
• S-SNEDDS demonstrated a significantly higher drug dissolution rate compared to binary dispersions, with stable performance and drug assay during stability studies.

Conclusions:

• Self-solidifying solid SNEDDS offer a promising approach to enhance the dissolution rate and bioavailability of Cefpodoxime Proxetil.
• This novel dosage form exhibits advantageous solidification behavior at ambient temperatures, presenting a viable alternative to conventional drug delivery systems.