Macro view of pharmaceutical powder particles, crystals, and lipid droplets at the interface with an aqueous medium, illustrating surface contact and early dissolution of poorly soluble APIs.

A macro scientific visual showing dry pharmaceutical powder, crystalline structures, fine particles, and lipid-like droplets interacting with a clear aqueous phase. The image represents the first contact between formulation surfaces and biological fluid, where wetting, dispersion, dissolution, and surface energy begin to shape the performance of poorly soluble APIs.