Kethavar is Nightshade's flagship dual-use compound — marketed legally as a dissociative analgesic for trauma response, it produces a state of calm, floaty detachment that dramatically reduces panic and emotional reactivity in crisis situations while maintaining enough motor and cognitive function for purposeful action. In combat contexts, users describe moving through violence with a sense of serene detachment, processing threats methodically without emotional noise. The legal version is a legitimate emergency medicine product; the street applications are what made Nightshade's reputation.