I'm in the same boat as Penelope. My leg cramps aren't quite as severe yet but it's going to be hard for me to quit coffee right now, on top of changing my eating. I don't think it's a crutch I can let go of quite yet. The multivitamin I take doesn't have much magnesium, so I guess I might look into getting a supplement. Do people eating LC tend to need to supplement with magnesium forever, or just during the transition to LC?