 Well, it comes down to absorption. One of the ways to tell if you're not absorbing calcium is take a look at what drugs you're taking. Are you on high blood pressure medication? Do you need something for your kidneys? Are you on pain medications? Do you need sleeping pills? With the calcium and especially the magnesium being absorbed, you're not going to suffer from all these things. My Calmax formula does absorb incredibly in the body. The thing is that when you take my Calmax formula, it's not like, well, will I feel better?