One of my friends at work brought in a couple of tubes of ZipFizz, the self-carbonating, just-add-water energy drink. For No Sugar (uses sucralose), 5 calories, and 1 carb this stuff was pretty good. It contains ginseng, caffeine, taurine, several amino acids, and 41,667% of the USDA’s recommended dose of Vitamin B12. I kid you not.
It didn’t leave me feeling shaky or antsy but I felt like I’d had a good nights sleep and a slight feeling of euphoria. Interesting stuff. I’d say it was better than coffee as a pick me up.