Ganoderenic acid B, a natural product derived from Ganoderma lucidum, can work by inhibiting the transport function of ABCB1 and enhancing the cytotoxicity of chemotherapy drugs against AbCB1-mediated multidrug resistant cancer cells.

3,4 Dichloroisocoumarin is a granzyme, cathepsin G, and neutrolphil elastase inhibitor.

Procyanidin B5 is an antioxidant derived from hawthorn with antimicrobial and antitumor activity and can be used to study infections.