Oxysophocarpine (OSC) is an alkaloid extracted from Sophora alopecuroides. Oxysophocarpine inhibits the growth and metastasis of oral squamous cell carcinoma (OSCC) by targeting the Nrf2/HO-1 axis. OSC protects cells against apoptosis and inflammatory responses and compromised miR-155 activity by attenuating MAPK and NF-κB pathways.