Your wish is my command!
http://www.powdermixdirect.com/G2-Powder-Sticks-p/fcg2000.htm?1=1&CartID=0

This gets more into the realm of food rather than meds, but I always carry a few packets as they weigh very little and work wonders for me. I've been toying with the combination of tanking up with G2 and magnesium/calcium (Rolaids NOT Tums) before the hike and before bedtime to ward off cramping. I have to do some more testing before I adopt this as a practise.

BTW, I was reading an article today that discussed regular dietary electrolytes. Apparently people who take too much sodium but not enough potassium are walking heart attack time bombs. http://www.canada.com/health/High+salt+potassium+early+death+Study/5088674/story.html
Potassium is available in a great many vegetables.