As stated above Straterra (Atomexitine) was initially thought to be an anti-depressant, being an SNRI (selective norepinephrie reuptake inhibitor) like venlafaxine, although the latter has a SSRI bonding also, I believe.
It found uses in treating ADHD, but doesn't respond to most people in this regard, from various forums I've personally read, about 25% state
beneficial effects.
It can be used in conjunction with SSRI's (selective serotonin reuptake inhibitors) and doctors will generally use this as a first stage in treading ADHD, with comorbid Depression as a first line solution to each condition.