Hey....I think Red Bull is awesome. I have fibromyalgia and have had no energy, just felt like sleeping all of the time. I started drinking this last week. I can tell a huge difference. It has vitamin B12 and vitamin B6. And that's exactly what it tastes like, the liquid vitamin B12 sublingual. It is very expensive, but if it works thats all I care about. Don't knock it til you try it!!