We need a ration of roughly 1/2 magnesium to calcium. so if you drink 800 mg of calcium you need 400 mg of magnesium aswell. i guess one could add a high source og magnesium to the mix :) Also, in order to uptake the calcium we need vitamin d3, and also, to properly use the calcium, we need vitamin k2. My suggestion would be to take a miltivitamin with both d3 and k2 along with the drink. to add magnesium one could eat 1/4 cup pumpkinseeds with the drink :)