I've gotten great relief from RLS by taking a multiple vitamin and mineral supplement just before climbing into bed at night (or if the RLS bothers me earlier in the evening, I'll take the supplement then). Within 15 minutes of taking the supplement, my RLS symptoms go away. This has been working consistently for several years and I'm posting this in hopes that it may help others. When I first tackled the RLS problem, I tried just taking individual supplements since I had read that a potassium, magnesium or iron deficiency could be causing the RLS, but the individual supplement method didn't help my problem. Apparently, in my case there must be a deficiency of several minerals. As long as I take the multiple vitamin and mineral supplement, I don't suffer from RLS. That's why I think that RLS sufferers get relief by taking black strap molasses since it contains many minerals such as iron, calcium, magnesium, etc.