What are the risks of taking electrolyte tablets to stay awake?

Electrolyte solutions don't do anything to stimulate you to stay awake. Frankly, there's not much you can take to keep you awake and to feel rested except to get adequate sleep. If you're groggy from lack of sleep or rest, taking a stimulant such as coffee just makes you awake and groggy. Your mind still won't work better. Your body requires a certain amount of sleep, and doesn't do well when you don't get it.