Salvia, as its name suggests (Latin salvere, to feel well and healthy) has for millenia been used as a herb. Now the use in chewing gum as been patented!
"The present invention relates to a chewing gum formulation that serves as a means for awakening human consciousness and mindfulness to the sensorial subtleties, which in turn strengthens sovereignty such that overall psycho-spirituality is enhanced. ..."
Via Annals of Botany: Plant Science Research