Cannabigerol has been found to act as a high affinity ? 2-adrenergic receptor agonist, moderate affinity 5-HT1A receptor antagonist, and low affinity CB1 receptor antagonist.  It also binds to the CB2 receptor, but whether it acts as an agonist or antagonist at this site is unknown. Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Cannabigerol is found in higher concentrations in hemp rather than in varieties of Cannabis with high THC content (the kind used as a drug). Cannabigerol (CBG) is a non-psychoactive cannabinoid found in the Cannabis genus of plants.