Stevie,
Does Whole Foods carry Carlsons? On the back of the bottle it would say Mg. glycinate, with reference to the Albion Lab process. Usually, large health food chains carry this brand. You could possibly make some phone calls to different stores, or go on the internet. Either purchase Metagenics, Solgar, or Carlsons, but make sure it refers to the Albion Labs process, and has no Ca. I think Kal brand may be another one.
Richard