my mum got some for me...her way of trying to help i think.
However i think it's most effective on depression that is caused by chemical imbalance...
If (as i suspect mine is) it's been brought about my experience and circumstances and thusly being unable to cope i'm not sure it's as effective.
I'm no expert though. I took it for a bit - can't say i noticed any major change and then i forgot to take it and haven't for a while