Desvenlafaxine, the succinate salt form of the isolated major active metabolite of Venlafaxine , is an orally active and BBB penetrated 5-HT and norepinephrine reuptake inhibitor, with IC50 values of 47.3 nM and 531.3 nM for hSERT and hNET, respectively. Desvenlafaxine shows weak binding affinity (62% inhibition at 100 μM) at the human dopamine (DA) transporter.