I have had restless legs every night for the past 45 years. The severity has gradually increased over the years and has led to several visits to the doctor. I have been on 4 different medications, none of which helped. On a whim, I bought a bottle of magnesium spray oil from the chemist and have been using this twice a day on knees and calves. I have also started taking a magnesium supplement. My RLS symptoms have almost completely disappeared. I still feel twinges in the evenings but they don't last more than a few minutes. I apply the oil as needed. It sings a bit and dries the skin but the disappearance of this wretched condition more than makes up for any temporary discomfort.
Hope this helps others.