Elemental Mineral Content
When we say elemental, we mean the amount of mineral that is pure and absorbable by the body. Tablets and capsules may or may not be 100% elemental. Many capsules include fillers and flow agents to aid in the encapsulation process. Most fillers are not harmful, but deceiving on the per capsule weight of the mineral being purchased..
A capsule of calcium may be 80% calcium and 20 % magnesium stearate or rice flour. So in a capsule of 1000 mg, you only get 800 mg of calcium.
The other problem is absorption. Powders do not absorb as well as liquid. You get about 3 to 5% absorption with mineral powders. Angstrom Minerals are 99.9% absorbed. So you see, the question is about efficiency.