At present, the calcium supplements on sale are mainly divided into inorganic calcium salts and organic acid calcium salts. Among them, inorganic calcium acid salts include calcium carbonate, dibasic calcium phosphate, etc.; organic acid calcium salts refer to calcium lactate, calcium gluconate and the like.
Although the calcium salt inorganic acid is high in calcium, it needs to be ionized by gastric acid to be absorbed, and the stomach acid of the elderly is relatively small, the solubility of calcium is low, and the absorption rate after taking it is naturally not high. At the same time, there is also a certain irritation to the gastrointestinal tract, for the elderly whose spleen and stomach function is already weak, there will be heartburn, nausea, and slight pain in the stomach after taking it.
The organic calcium acid salt is more conducive to gastrointestinal absorption, especially suitable for the elderly.