PR2101: Dosage form Design - Gels.

A gel is a colloidal system in which a porous network of interconnected nanoparticles spans the volume of a liquid medium. In general, gels are apparently solid, jelly-like materials. Both by weight and volume, gels are mostly liquid in composition and thus exhibit densities similar to liquids, however have the structural coherence of a solid. An example of a common gel is sodium alginate. Many gels display thixotropy - they become fluid when agitated, but resolidify when resting.

Thanks to constance for the idea!! =)