Why Choose Angstrom calcium? Because it does not require digestion. Angstrom calcium is absorbed on a cellular level. Can your calcium tablet say that. In fact, you might see you tablet pass right through to the toilet like a hard calcium rock. Capsuled calcium is good, But a liquid form is better. Colloidal minerals are the going rage, but they still need to be broken down before the body can absorb them. Angstrom size calcium is absorbable on the cellular level.