I agree with the above echo 109 wpm sustained for 2 minutes. usually closer to around 90 wpm though If i'm reading that right, it has Ca to Mg in a 100:5 ratio. I maintain my Ca to Mg at a 1:3.5 ratio. So, from what i can tell, it barely has any Mg at all. The thinking is probably it has enough to make up for depleted, but not enough to raise it... This sort of thing is a primary reason I use raw elements.