Comment by noduerme

B12 is indeed a hangover cure. In Las Vegas, there are food truck style vans that drive down the Strip in the morning and give people B12 injections. In Australia there's a dissolvable seltzer tablet called Berocca (made by Bayer) which everyone takes the night they're getting drunk. For some reason, the same Berocca tablets in America have less vitamin-B, and include ginseng, and are twice as expensive as they are Down Under. But in America there's a thing called "Emergen-C" which while not marketed as a hangover medicine has almost the exact same B6/12 and C proportions as Berocca in Australia. I figured this out after awhile when my band's drummer kept "smuggling" Australian Berocca back to the States for us. Which just shows it does work, a little.