Fig. 4: Plasma concentration-time curves of BUP and HBUP under the same food condition after an oral dose of 150 mg BUP in Chinese subjects, fasting CYP2B6*1/*1group (n=10) compared with fasting CYP2B6 mutants (n=10), feedingCYP2B6*1/*1 group (n=11) compared with feeding CYP2B6 mutants (n=13).