Pseudolaric Acid B has dual antiangiogenic, anti-fungal, anti-fertility, anti-inflammatory, immunomodulatory and pro-apoptosis effects. Pseudolaric Acid B reversed the multidrug resistance of gastric neoplasm to chemotherapy drugs by downregulating the Cox-2/PKC-α/P-gp/mdr1 signaling pathway, it suppressed T lymphocyte activation through inhibition of NF-κB and p38 signaling pathways.

Ergosterol is the primary sterol found in fungi, with antioxidative, anti-proliferative, and anti-inflammatory effects, ergosterol peroxide has the potential to be developed as a therapeutic agent to prevent renal fibrosis. Ergosterol can promote pheromone signaling and plasma membrane fusion in mating yeast, the critical requirement for ergosterol in V-ATPase function may underlie the antifungal activity of azoles. Ergosterol is a phytosterol consisting of ergostane having double bonds at the 5,6-, 7,8- and 22,23-positions as well as a 3beta-hydroxy group. It has a role as a Saccharomyces cerevisiae metabolite and a fungal metabolite. It is a 3beta-hydroxy-Delta(5)-steroid, a member of phytosterols, a 3beta-sterol and an ergostanoid.

Pseudolaric Acid C shows weak antifungal activity against Candida albicans.

Pseudolaric acid B-O-beta-D-glucopyranoside is a natural product from Pseudolarix amabilis.