The oral delivery of hydrophobic drugs presents a major challenge because of their low aqueous solubility, which may lead to poor bioavailability. A lot of measures were used to improve the oral absorption of drugs. Modification of the physicochemical properties, such as reducing particle size of the compound , using solubilizer , solid disperser formation or incorporating the compounds into lipid vessels may be one approach to improve the dissolution rate of the drug. Surfactants play a key role in many of...