There is a carb-free energy drink I buy through Quixtar that is full of B-Vitamins, called XS energy drink. I don't know how it is with electrolytes but I really like to drink it before my long-distance runs (60 min +) for energy and endurance. If I see anything similar in a store I'll let you know (has anyone else seen it?), but the only place I've found it so far is online...