Hypericin is a photosensitive antiviral with anticancer and antidepressant agent . It can inhibit tyrosine kinases with IC50 of 7.5 μM. It can induce both apoptosis and necrosis in a concentration and light dose-dependent fashion, and inhibit RANKL-mediated osteoclastogenesis via affecting ERK signalling in vitro and suppresses wear particle-induced osteolysis in vivo. Hypericin is a carbopolycyclic compound. It has a role as an antidepressant. It derives from a hydride of a bisanthene.

Casuarictin is a tannin.