I've been drinking Sugar Free NOS ever since high school when, to my dismay, Sobe Adrenaline Rush Sugar Free was discontinued. Most low-carb energy drinks are disgusting, but I actually enjoyed the citrus tang of Sugar Free NOS. It packed an awesome caffeine punch that helped me plow through long days or gave me an extra kick for events. I won't deny: I was shamelessly addicted. I was known around my town for my habit, and gas stations stocked cases just for me. I knew I was a hopeless case when one of the highlights of watching a certain film was noticing a Sugar Free NOS in the gas station the protagonist was entering. Scroll to bottom for ingredients comparison.