Synthahol. It would allow alcoholics to drink as much as they want, then sober up immediately when they need to. Also they wouldn’t become alcoholics to begin with, since synthahol isn’t actually alcohol and the human body doesn’t develop dependency to it. Someone in Europe claims to have invented it already and it is already being sold there! Supposedly it gives you the same effects as alcohol, but only up to 2-3 drinks worth, and then it stops working. The FDA won’t approve anything here in the US without tens of thousands of dollars and tons of tests, so we won’t see it for a long time, if ever.