“Daidzein, genistein, and glycitein uncompetitively inhibited nicotine C‐oxidation catalyzed by recombinant CYP2A6 expressed in baculovirus‐infected insect cells with Ki values of 1.3 ± 0.3 μM, 0.7 ± 0.2 μM, and 5.2 ± 0.8 μM, respectively, but not coumarin 7‐hydroxylation.”