Yes!!!!!! try magnesium and calcium. Try to get it in a powder form that you can dissolve in water. It gets in the system faster. When my spasms get especially persistent, I take a dose along with my other meds.
The brand I got is called: MagIcal Ionic. I'm not sure you can still buy it, but I really like the powder form. Probably any combo form of the two would work just as well.

When asked how Requip works:
Requip is part of a class of drugs called dopamine agonists. Dopamine resides in the part of the brain that coordinates muscle movement. When there is less dopamine in this area, muscles tend to become stiff and rigid. Requip helps increase the amount of dopamine in your brain, "fooling" your nervous system into thinking that it has more dopamine than it really does. This helps reduce the symptoms of both Parkinson's disease and restless legs syndrome.