I ride long distance on my bicycle and have to deals with cramps too often. I always have sports drink, but also carry Rolaids, Tums and Endurolytes. Rolaids and Tums are for the calcium and Rolaids is prefered as it also have magnesium. The Endurolytes are the electrolytes that you get in sports drink without all the liquid. Since I started carrying these items and use them at first hint of a cramp, I have been able to ride without cramping or getting rid of a cramp quickly. Apple cider vinegar is another cramp solution, but kind of hard to carry on the bike.