My RLS has diminished about 95 percent since taking calcium.
I mix 1 tablespoon of Standard Process calcium lactate powder in my evening kefir drink. Standard Process also carries it in tablet form in which you would take six per day. It is my understanding that calcium lactate is the most absorbable form of calcium and I would only recommend taking this form from Standard Process.
I also take Dr. Berg's electrolyte powder and extra magnesium. I also used to get severe toe and foot cramps. With taking these supplements, all cramps are gone too.