Wine Facts: For the Wino in Everyone

9 Due to possessing a greater amount of congeners, red wine will give you a worse hangover than white wine
Congeners, for the record, are a toxin created during the fermentation process for some alcohols, and darker alcohols tend to have more of them. So if you have to be up early in the morning for work or a basket weaving class or whatever, it’s best to stick with the Chardonnay and stay away from the Cabernet.
7