Has anyone given this a try? It is apparently available without a prescription buyldn.com/
Here is a VERY complex paper explaining some of the mechanisms. "Importantly, not only there was a significant effect of subjective symptoms, but also of PLMS and sleep complaints. These are, of course, preliminary results which could be influenced by a placebo effect and, therefore, await confirmation by a more extensive double-blind clinical trial. Confirmation of the therapeutic effect of dipyridamole in RLS would bring ENT1 inhibition as a new therapeutic approach for RLS, offering an alternative to dopaminergic drugs and, therefore, to their long-term complications, mainly augmentation."