Is Red Bull and Vodka together hazardous for health? Or do they make a lethal combination that blows away the mind. I once had this DVR, starting was kind of okay but slowly when I increased the number and went up to five then that was it. I tell you after that I never dared to have this deadly combination again. I had it in the usual ratio of 2:3 but don’t know how it went wrong, I got sleepless nights and that day I puked. This was the most terrible thing as I keep experimenting with cocktails, but never experienced such a dreadful situation.