Enhanced permeability and oral absorption of Panax notoginseng saponins by borneol

Abstract The purpose of this study was to develop a tablet containing the herbal extracts Panax notoginseng and Rehmanniae Radix along with borneol, which could enhance the oral absorption of the extracts, for the treatment of osteoarthritis. The prepared herbal extracts showed significant in vitro anti-inflammatory effects via suppressing nitric oxide production in a concentration-dependent manner (P