1. A method of treating a Depressive Disorder and/or ameliorating a symptom thereof in a subject in need thereof, comprising: administering to the subject a therapeutically effective amount of a pharmaceutical composition comprising MBDB (N-methyl-1-(1,3-benzodioxol-5-yl)-2-aminobutane) or a pharmaceutically acceptable salt thereof, and/or an enantiomer thereof, and/or a polymorph thereof.