Researchers in Chile are going to test a possible solution for breaking the addiction cycle alcoholics face.

Dr. Juan Asenjo, the director of the Institute for Cell Dynamics and Biotechnology at Universidad de Chile, is leading a team of researchers who are developing a vaccine for alcoholics. The injection makes drinking alcohol intolerable as it gives the person an immediate hangover when they take a sip and it is introduced into their system. reports that the vaccine stops the enzyme that usually breaks down alcohol, causing the liver to produce a compound called “acetaldehyde.” This is what causes a hangover, making the person feel nauseous and uncomfortable. If they continue to drink, they will feel worse and these symptoms could be prolonged.

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