2KC is one of the dietary supplements to help the body to fight the symptoms of a hangover. The key components are the succinic acid and fumaric acid. It also contains vitamins and glucose.
Alka-Prim
Alka-Prim despite, that is promoted as a cure for a hangover-related unpleasantness, only contains aspirin. So this is just a painkiller and as such can only be helpful for symptoms of pain. In the hangover pain is unfortunately only one of the elements.