Pug, are you taking a calcium/magnesium supplement? Multi vitamins are great, but the amount of cal/mag they contain is nowhere near the amount we need. RDA for cal is 1000-1500 mg a day and for magnesium its 400-600mg a day. You can get both of them in one pill in a ratio of 2:1 (333mg cal / 167 mg mag) Take one with each of your 3 meals and one an hour before bed. Both cal and mag help with muscle cramping, muscle spasms and muscle relaxtion. I too had these cramps when I started LCing, w/in a day it stopped after I supplemented with cal/mag.

Be sure you get the chelated kind of minerals - they are better apsorbed and easier on your tummy.

HTH
Nat