TABLE 1

IC50 values of the major phytocannabinoids for inhibition of AMMC and dextromethorphan O-demethylase activities of recombinant CYP2D6 and HLMs

EnzymesSubstratesIC50 (μM)
Δ9-THCCBDCBN
CYP2D6AMMC21.26.5224.0
CYP2D6Dextromethorphan17.16.0112.3
HLMsDextromethorphan22.94.0124.9