While CBD is found in both hemp and cannabis (marijuana), the distinguishing factor between the two substances is the amount of THC present. Hemp plants are legal for purchase and to be grown in the United States without special certification and used without a medical card due to it having less than 0.3% THC. Cannabis plants are restricted in several states as they have greater than 0.3% THC. THC is the acronym for tetrahydrocannabinol. THC is helpful in reducing anxiety, pain, inflammation, muscle spasticity, glaucoma, and increases appetite. In addition to improving immune function and sleep. The average Cannabis plants have a concentration of 12% THC.