That would be a really stupid thing to do. My friend has shot oxy before and regrets it... he was fine, and filtered it several times, but it's not a smart move. Wheelfilters help but are not too easy to acquire. With straight IR oxycodone being a source of regret, I think a vicodin would totally eclipse that level of "shouldn't really do this". EDIT: didn't think about CWE. That makes things considerably safer yet probably still not worth it.
Do not mainline Vicodin; it's a waste. The active ingredient, hydrocodone, is a prodrug. It requires first pass metabolism in order to be active at all. Don't snort it, don't mainline it, just eat it or CWE and drink it.
