What is K2? Introduction K2, also generally called "Spice," is really a synthetic cannabinoid, a form of drug that mimics the effects of THC (tetrahydrocannabinol), the psychoactive compound located in cannabis. Even though often promoted as a safe and even legal substitute to marijuana, K2 is just about anything but. https://andrescurwz.blogdal.com/30611299/what-s-k2