It's pretty much unknown in the literature and only researched at all in athletic contexts, but there is a lot of overlap between physically enhancing interventions and mentally enhancing interventions. Whenever I'm lacking in creativity for possible interventions, I can always look at the World Doping Organization's list.

I would like to do some research on electrolytes with undergrads eventually, maybe next year. At this point I don't just supplement potassium but try and target a high water, high electrolyte, high trace mineral diet for cognitive enhancing purposes. I'm weary enough about the dangers of potassium to not trust most people enough to spoon it themselves out of bulk potassium citrate bags.

Apollinaris is my favorite off the shelf bottled water (check Whole Foods) and Trace Minerals Research makes my favorite electrolyte supplements, particularly Endure and 40,000 Volts, available on Amazon and often Amazon Prime.