2,6-Dimethylquinoline is a natural product extracted from the roots of Peucedantu praeruptorum. 2,6-Dimethylquinoline is an inhibitor of CYP1A2 and CYP2B6 with an IC50 of 3.3 and 480 μM, respectively.

Rhodionin and rhodionin can inhibit cytochrome P450 2D6 non-competitively with high specificity which could have implications for interactions with co-administered drugs; they can significantly suppress the elevation of the postprandial blood triglyceride level suggests that they may be to the treatment of lifestyle-related diseases such as hyperlipidemia and exogeneous obesity and to health foods.

Naringin is a flavanone glycoside, which exerts a variety of pharmacological effects such as antioxidant activity, blood lipid lowering, anticancer activity, and inhibition of cytochrome P450 enzymes.