Liquid Nitro Tropical Storm Low Carb Energy Drinks contain a blend of herbs and vitamins that produce clean energy without the crash or aftertaste. A great tasting energy drink that works without the harmful side effects. Contain Vitamins B6 & B12. These vitamins do a lot for our bodies and there is ample research that proves their benefits. B vitamins increase the amount of oxygen carried by the blood helps in the processing of carbohydrates into energy.