Nonionic surfactant-based vesicular system for transdermal drug delivery.

Area of Science:

• Pharmaceutical Sciences
• Drug Delivery Systems
• Nanotechnology

Background:

• Transdermal drug delivery offers advantages over oral administration, including sustained release and reduced side effects.
• Niosomes, non-ionic surfactant vesicles, are explored as novel carriers for enhanced drug permeation.
• Ibuprofen is a widely used non-steroidal anti-inflammatory drug (NSAID) suitable for transdermal application.

Purpose of the Study:

• To formulate and evaluate Ibuprofen niosomal formulations for transdermal drug delivery.
• To investigate the impact of surfactant type and cholesterol:surfactant ratio on niosomal characteristics.
• To compare the transdermal permeation and skin retention of Ibuprofen from niosomal formulations against conventional gel.

Main Methods:

• Niosomes were prepared using a modified ethanol injection method with Span 60, Tween 60, Tween 65, and cholesterol.
• Vesicles were characterized for entrapment efficiency, particle size, zeta potential, and in vitro drug release.
• Skin permeation studies were conducted using a Franz diffusion cell with excised rat skin.

Main Results:

• The choice of surfactant and cholesterol:surfactant molar ratio significantly influenced entrapment efficiency, particle size, and drug release.
• Niosomes formulated with cholesterol and Span 60 (0.5:1 ratio) exhibited higher entrapment efficiency.
• Both niosomal and liposomal formulations enhanced Ibuprofen permeation and skin accumulation compared to Carbopol gel.

Conclusions:

• Niosomal formulations are effective carriers for Ibuprofen transdermal delivery.
• Span 60 and Tween 65-based niosomes showed enhanced drug permeation and skin retention.
• Niosomal technology presents a promising avenue for developing advanced Ibuprofen transdermal systems.