Hi there, I have post ET MF and the muscle spasms are awful. I get them at night and cannot get out of the bed to stand the calf and leg is so tight. I have tried lots of things, eat bananas take magnesium supplements. The thing that helps when I get them is to have a bottle of the magnesium oil spray beside the bed as that seems to help release them. As a result of spasms I have had nerve pain in my feet from the tendinopathy I also get indirectly as a result. If you cannot get the magnesium oil there is also a gel which is good for the same thing..