A dose regimen comprising the simultaneous administration of two pharmaceutical compositions, wherein the first pharmaceutical composition is a composition comprising vortioxetine or a pharmaceutically acceptable salt thereof for once daily oral administration, and the second pharmaceutical composition is a composition comprising vortioxetine or a pharmaceutically acceptable salt thereof which together with said first composition quickly achieves a steady-state plasma level of vortioxetine in said patient which steady-state plasma level is the same as the steady-state vortioxetine plasma level achieved by the administration to said patient of said first composition alone.
