Simple suggestion; for muscle cramping is salt, real salt with water, at least 2 liter daily, with 1/2 to 1 ts salt per liter.
Magnesium is the cramp remedy; I have found Magnesium Malate and or Magnesium oil to be most effective.
A little boron would help too; this also helps detox the fluoride
Iodine 50 mg or more, with all companions; for a month or two, see how you are doing then.