Extremely Low Bioavailability of Magnesium Lithospermate B, An Active Component from Salvia miltiorrhiza, in Rat - Zhang, Ying; Akao, Teruaki; Nakamura, Norio; Duan, Chang-Ling; Hattori, Masao; Yang, Xiu-Wei; Liu, Jian-Xun (Planta Medica, 2004)