Mike, have you had any bloodwork done recently? Some of the meds that we take can lower our potassium levels to the point that they cause cramping.

Having said that, my doctor prescribed potassium (in the form of Potassium Chloride) for me, and that was when the cramping STARTED! I just went off of it and the cramping went away. (And yes, the pain from the cramping was waking me up at night)

DO NOT increase the amount of potassium you are taking without consulting your doctor, though - too much potassium can be just as bad as too little....