Gatorade quietly (we do not even know when) finally went from being a thirst-quenching rehydrator to a true electrolyte drink when the sodium citrate (citrtate is not an electrolyte) became sodium chloride (an electrolyte). Sodium chloride is basically table salt. Now, even the World Health Organization says it is okay to use as an electrolyte replacement for vomiting and diarrhea.
Before we get too excited about the benefits, keep in mind that most Gatorade-types have chemical additives (such as artificial colors, flavors, and artificial sweeteners) and few contain the most deficient electrolyte of all...magnesium! Without it, potassium cannot be used efficiently and energy, endurance, muscle strength, and recovery for athletic events will suffer.