The depressant effect is seen while you are still taking Vicodin, and for a few days to weeks after you stop using it.
ok, thanks. one more question, if it does cause depression, is it temporary?
Hello.
There are no conclusive studies about long term effects of Vicodin on cognition, at the dose you were taking. However, Vicodin does have tendency to induce depression. And depression is associated with a decline in cognitive functions. You may have to look at the problem from this aspect. There is no evidence of a permanent cognitive decline due to this drug.
You can have a look at this link to decide if it was an abuse.
http://www.sis.indiana.edu/DSM-IV-Criteria.aspx
Hope this helps. Take care.