Ahead, find out how these hangover cures supposedly work their magic and whether you should take them, according to experts. How These Hangover Product Ingredients Supposedly WorkProbioticsZBiotics’ Pre-Alcohol is a liquid that you take before you start drinking. N-acetylcysteine (NAC), which promotes glutathione production and protects against oxidative stress and inflammation, according to a 2021 review in Antioxidants . which promotes glutathione production and protects against oxidative stress and inflammation, according to a 2021 review in . Best Practices When DrinkingAlongside using a hangover product in moderation, make sure your other habits around drinking are solid too.