Competitive radioligand binding assays were performed using cells expressing either the human serotonin (5-HT) transporter (hSERT) or norepinephrine (NE) transporter (<< hNET >>) with K(i) values for [[ DVS ]] of 40.2 +/- 1.6 and 558.4 +/- 121.6 nM, respectively.