THC (delta-9-Tetrahydrocannabinol) is one of the most studied phytocannabinoids. THC is responsible for the psychoactive effect on people. Both THC and CBD respond to the Endocannabinoid system. In recent molecular research, it was found that the endocannabinoid system is very present in the pathophysiology of anxiety disorders. They discovered that modulation might be an effective treatment. In patients suffering from PTSD, it was found that there is a higher expression of CB1 receptors.