Among all newly discovered chemical entities about 40% drugs are lipophillic and fail to reach market due to their poor water solubility. Drug with poor water solubility cause slow dissolution rates, generally show erratic and incomplete absorption leading to low bioavailability when administered orally. Aqueous solubility of any therapeutically active substance is a key property, as it governs...

Solid dispersions have been employed to enhance the dissolution rates of poorly water-soluble drugs. Many approaches have been investigated for the preparation of solid dispersions. This paper reports the various solubility enhancement strategies in solid dispersion. The approaches described are fusion (melting), solvent evaporation, lyophilization (freeze drying), melt agglomeration process, e...

glucosyl-ƒ¿-CD (G-ƒ¿-CD), 6-O-ƒ¿-D-glucosyl-ƒÀ-CD (G-ƒÀ-CD), and 6A,6D-di-O-ƒ¿-D-glucosyl-ƒÀ-CD (2G-ƒÀ-CD) with slightly soluble or insoluble drugs in aqueous solution and in the solid state was studied by the solubility method, ultraviolet spectroscopy, and differential scanning calorimetry. These glucosyl-CDs were capable of forming inclusion complexes with compounds which can form complexes ...

The drug candidates coming from combinatorial chemistry research and/or the drugs selected from biologically based high-throughput screening are quite often very lipophilic, as these drug candidates exert their pharmacological action at or in biological membranes or membrane-associated proteins. This challenges drug delivery institutions in industry or academia to develop carrier systems for th...

Introduction Although the capability of ingested lipids to enhance the bioavailability of poorly water-soluble drugs has been experimentally observed and established 1 , the phenomenon is not well understood and is unpredictable. Commercially, lipids could offer valuable opportunities for enabling oral drug delivery, as approximately 4070% of all new drug candidates have been estimated to have ...

Nanotechnology has been improving and has a variety of application fields. One of the major application areas of nanotechnology in pharmacy is nanoparticular drug delivery systems. Preparation of drug nanocrystals to improve the solubility of poorly water-soluble drugs for oral delivery is also one of the important applications. Nanocrystal dispersions comprise water, active drug substance and ...

Low solubility compounds show dissolution rate limited absorption and hence poor absorption, distribution and target organ delivery. Improvement of aqueous solubility in such a case is valuable goal to improve therapeutic efficacy. Complexation with CDs by different methods like physical mixing, melting, kneding, spray drying, freeze drying, co-evaporation has been reported to enhance the solub...