This will be the best $99 you've ever spent. If you're feeling hungover, go there, get a liter of fluids plus awesome vitamins. Relax for 30 minutes. Boom. You feel better. I walked in there feeling bleh, walked out damn near giddy. I imagine that if you're seriously hungover, you'll need an extra liter of fluids...but for my particular hangover (could have powered through, but would have felt exhausted the next day), this was a fantastic fix. Plus, all the b vitamins make you skin look lovely.