Somewhat in the expert class when it comes to cramping of arms and legs. I take about 4 to 6 Tums e-x a day for the calcium and it really helps. When the doc said yep this will help your hands arms and legs I thought this is crazy as hell but it does work. I get cramps if I eat stuff that contains sugar, acids or salt. Beer is fine but soda will do me in, even just a small amount.