FM04 is an orally active and highly potent inhibitor of P-glycoprotein (P-gp) with an EC50 value of 83 nM. FM04 can interact with Q1193 and I1115 in human P-gp nucleotide binding domain 2 (NBD2).

2-Hydroxystearic acid is a hydroxy fatty acid found in humans and U. armoricana. It reduces the growth of Ehrlich ascites tumor (EAT) cells in vitro when used at a concentration of 100 μM.

Osthol hydrate is a natural product.