Probably silly of me to mention it as I'm sure you've thought of it, but do you take magnesium regularly or get enough magnesium daily? Can't say that it will be a panacea, but it might provide some aid to help settle the spasms a bit.

Kind Regards,
Jay

Almost all of us long for peace and freedom; but very few of us have much enthusiasm for the thoughts, feelings, and actions that make for peace and freedom. - Aldous Huxley

Was the government to prescribe to us our medicine and diet, our bodies would be in such keeping as our souls are now. - Thomas Jefferson