Hangovers are miserable—and they’re also predictable. Alcohol can contribute to dehydration, disrupted sleep, gastrointestinal irritation, and electrolyte imbalance. That’s why many people look for fast relief options, including IV hydration therapy. What causes a hangover? A hangover isn’t just “dehydration,” but dehydration can be a major part of how you feel. Alcohol is a diuretic, meaning you may lose more fluid than usual. Common symptoms include: ·         Headache ·