Also on vit D, B-complex, B-12, multivitamins, morphine (had two level spinal fusion 2007), but these cramps remind me of what runners sometimes get--like a charlie horse
, but often they last for hours, that's why I'm up. As soon as I lie down in bed they return. This goes on all night, but not every night. I can sometimes go a week or more without a single spasm, and then boom! they start up again.