Low potassium causes painful cramps, leg and calf cramps her. The banana not an alternative...too much sugar. When leg cramps do occur, a teaspoon of mustard (ie French’s) will do the trick almost immediately.
Another mention...tomatoes. Careful with those for persons on warfarin. They, like oranges, grapefruit, cranberries, greens, alter your INR numbers drastically.
I was able to clear up leg cramps with magnesium citrate in water almost instantly. Interesting that Potassium is also an issue. I will try that if they ever come back.