[2] Oleanolic acid can be found in olive oil, Phytolacca americana (American pokeweed), and Syzygium spp, garlic, etc.

[9] An extremely potent synthetic triterpenoid analog of oleanolic acid was found in 2005, that is a powerful inhibitor of cellular inflammatory processes.

They are extremely potent inducers of the phase 2 response (e.g., elevation of NADH-quinone oxidoreductase and heme oxygenase 1), which is a major protector of cells against oxidative and electrophile stress.

[10] A 2002 study in Wistar rats found that oleanolic acid reduced sperm quality and motility, causing infertility.

[12][13] Oleanolic acid activates telomerase in peripheral blood mononuclear cells (PBMCs) 5.9-fold, more than any other compounded tested, with the exception of Centella asiatica (8.8-fold).