Reading through the questions put forward about the chemistry of alcohol, lead me to ponder what stops us giving ourselves an alcohol dehydrogenase shot after we've been drinking to speed up the process of metabolizing the ethanol in our blood system and thus sober us up more quickly?

Is it a physiological issue, i.e. there are interactions in the body that I don't know of. Or is it an issue of us not being able to synthesise alcohol dehydrogenase?