Effects of vegetable acid and oxalate on calcium absorption: Foods such as cola drinks, alcohol and spinach contain vegetable acid, oxalic acid and tannic acid, which can combine with calcium ions to form insoluble calcium salts, affecting calcium absorption. Taking calcium preparation between meals can avoid the influence of unfavorable factors in food and is beneficial to the utilization of calcium. Taking calcium preparation in batches is more effective than taking it centrally.

Extended data:

The absorption rate of calcium in human intestine is limited. Different calcium tablets have different calcium content, mainly due to different solubility. The higher the calcium content, the lower the solubility, and vice versa. Therefore, regardless of the calcium content in calcium tablets, its absorption rate and utilization rate in the intestine are similar.

On the basis of dietary calcium supplementation, try to remove various factors that affect calcium absorption, such as smoking, drinking, acidic drinks, coffee, tea and so on. Eating too much meat and a high-salt diet will affect the absorption of calcium.

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