Different modulation of Panax notoginseng on the absorption profiling of triptolide and tripterine from Tripterygium wilfordii in rat intestine

Modulation of absorption of chemicals in TW by subsidiary herbs may be responsible for reinforcing the actions and neutralizing the adverse effects through compatibility in the formula of Qing-Luo Tong-Bi. PN inhibits the absorption of triptolide of TW and promote the absorption of tripterine.