Enhanced drug solubility

Enhanced drug solubility refers to the pharmaceutical property or process of increasing the concentration of a compound in a solvent, typically aqueous media. It is a critical pharmacokinetic parameter rather than a biological target, as a drug must be in solution to be absorbed across biological membranes [Savjani et al., 2012]. Approximately 40% of marketed drugs and up to 90% of drug candidates are poorly water-soluble, often categorized as Class II or IV under the Biopharmaceutics Classification System (BCS) [Kalepu & Nekkanti, 2015]. Strategies to enhance solubility—such as salt formation, solid dispersions, and nanotechnology—are vital for ensuring adequate oral bioavailability and therapeutic efficacy [Amidon et al., 1995]. While essential for the success of a therapeutic intervention, it does not represent a specific protein, receptor, or enzyme that a drug binds to in a biological system. Instead, it is an optimized formulation goal that facilitates the delivery of the drug to its actual therapeutic targets.

Other names

Aqueous solubility enhancementDrug solubilizationBioavailability optimizationImproved dissolutionSolubilization

Not applicable. This is a pharmaceutical property rather than a biological mechanism of action involving a drug-target interaction.