I don't think that it would get rid of the nauseousness. It sounded like he was worried that he did too much. From past experience, I know that sugar water can help bring people back to reality when they've done too much G.
I've posted this same thing at another board and got several responses to why this happens. Here is the answer that I trust the most: GHB lowers your blood pressure which slows down the recovery time. Intake of sugar increase insulin levels which increases blood pressure.
Disclaimer: I don't know if this is true or not. I do know that it does work.
