Pro-Cal - Restless Leg Syndrome - Muscle CrampsnMagnesium in Pro-Cal is chelated with a unique fructose chelate. Most chelated minerals are attached to an amino acid, but with Pro-Cal the magnesium mineral is attached to a fruit sugar molecule. This allows a quicker and higher amount of magnesium to be absorbed providing better results.nFor Best Results - take 1 Pro-Cal tab in the morning and 2 tabs about two hours before bed.nPro-Cal tabs are small and easy to swallow..n