Non-psychotropic constituent of cannabis that is anticonvulsive, antihyperalgesic and neuroprotective in vivo. GPR55 and weak CB1 antagonist (IC50 values are 0.445 and 3.35 μM), CB2 receptor inverse agonist and inhibitor of anandamide uptake (IC50 = 27.5 μM). Also a weak agonist at VR1 vanilloid receptors (EC50 = 3.5 μM).