binds to the CB 2 receptor. [11] Tetrahydrocannabivarin Tetrahydrocannabivarin (THCV) is prevalent in certain South African and Southeast Asian strains of Cannabis. It is an antagonist of THC at CB 1 receptors and attenuates the psychoactive effects of THC. [12] Cannabichromene Cannabichromene (CBC) is non-psychoactive and does not affect the psychoactivity