Cynarin (Cynarine) is an artichoke phytochemical that possesses a variety of pharmacological features including free-radical scavenging, antioxidant, antihistamic and antiviral activities. Cynarin blocks the interaction between the CD28 of T-cell receptor and CD80 of antigen presenting cells. Cynarin triggers Nrf2 nuclear translocation, restores the balance of glutathione (GSH) and reactive oxygen species (ROS), and inhibits mitochondrial depolarization.