Scientists think they've finally found an effective cure for the hangover. .The findings come from a new study conducted by the University of Helsinki and the University of Eastern Finland.Nineteen men were recruited for the study, and they spent Friday nights in a hotel conference room downing drinks.Each participant was given either a placebo, a pill containing 600 mg of L-cysteine, or a 1,200 mg dose.The next morning, they were asked to answer a number of questions about how they were feeling.The researchers discovered that the men who received the 1,200 mg pill experienced less severe hangovers.Altogether, these effects of L-cysteine are unique and seem to have a future in preventing or alleviating these harmful symptoms as well as reducing the risk of alcohol addiction, Research findings.