Requip is the first medication approved by the FDA for the treatment of moderate to severe cases of RLS.
Does your husband find it not helpful or he is bothered with its side effects?
Is your husband anemic?
Does he take supplements with Vit B group every day?

The side effects of Requip are not worth any benefit you gain. Th side effects are life changing, and not for the better. I would suggest seeing another doctor and asking for a different regimen to get over the RLS - one that is worse than what it tries to treat.