1, calcium tablets after the shelf life of one month can not eat.

2, calcium tablets after the shelf life of the efficacy of the drug will be significantly reduced, when the calcium tablets after the expiration date, the chemical composition of the calcium tablets itself will undergo significant changes, which may result in a serious loss of calcium ions, or calcium tablets into the gastrointestinal tract is difficult to be digested by the body, absorption, which reduces the efficacy of the calcium tablets, and therefore after the expiration of the shelf life of the can not be eaten.

3, calcium tablets after the shelf life of the side effects will increase significantly, because the calcium tablets into the gastrointestinal tract, in addition to the gastric mucosa, intestinal mucosa has a certain stimulating effect, but also may cause kidney and liver lesions, if the calcium tablets are deposited in the renal skin mucous membrane or glomerular filtration membrane, etc., will cause glomerular filtration rate obstacles, thereby causing urinary excretion disorders, will also be The function of the liver is disturbed, so calcium tablets can not be eaten after the shelf life.