That enzyme is only one of the steps in a long process that burns alcohol, eventually, if I recall correctly, sliding it into the normal metabolic cycle, with some remainder that has to be dealt with via auxilary enzymes that are also usually in limited supply and only in the liver.
If you're really serious, I have a decent biochem text on this, somewhere. It's unpacked now, at least.
The other problem, of course, is that the enzyme needs to be in specific places INSIDE the cells, and I don't know that there is any uptake mechanism for it.