The roots of Sophora flavescens was reported to possess many pharmacological activities including anti-inflammatory, antiashmatic, antithelmintic, free radical scavenging and antimicrobial activities. However, the low saturated solubility and dissolution velocity of S. flavescens lead to poor bioavailability. The S. flavescens nanoparticles (SFNP) were prepared by a combination of ultrasound and hydrolysis developed by the authors. The drug dissolution profiles of SFNP in both pH 6.8 and pH 2 media showed complete dissolution within 30 min. The seropharmacology study showed that oral S. flavescens absorption in the SFNP was significantly increased. Anti-inflammation assay revealed the therapeutic efficiency of S. flavescens significantly enhanced upon nanoparticle formation.
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