I take a good multi and a calcium/magnesium supplement every day and sprinkle my food with the potassium salt substitute.

When I have leg cramps in the night I jump out of bed and stand on both feet and bend forward just a bit. Then I make sure to eat at least half an avocado each of the next three or four days.

The only potassium supplement I can find in the 3 counties nearest my home only supply 3% of RDA per serving (I think one good sized pill). I believe that the supplements are so small because too much potassium can interfere with your heart's natural rhythm.