Calcium Gai Zhong, Calcium Gluconate, Calcium …… Faced with a variety of calcium supplements, many elderly people will follow the advertising. However, it is best for the elderly to choose calcium tablets with organic acid calcium salts, i.e. “organic calcium”, because organic acid calcium salts are more conducive to gastrointestinal absorption and suitable for the elderly. At present, the main calcium supplements sold are inorganic acid calcium salt and organic acid calcium salt. Among them, inorganic acid calcium salts include calcium cover, calcium bone, calcium D, etc.; organic acid calcium salts mostly refer to calcium lactate, calcium gluconate, etc.. Although inorganic acid calcium salts contain high calcium content, their solubility is low, and there is still some irritation to the gastrointestinal tract. For the elderly whose spleen and stomach functions are already weak, heartburn, nausea and slight stomach pain may occur after taking them. Even so, most elderly people may not realize that the calcium supplement “problem”, then if you take the medicine for stomach pain, not only the symptoms are not relieved, but also affect the effect of calcium supplementation. At the same time, inorganic acid calcium salt through the stomach acid to make calcium ionization to be absorbed, the elderly have relatively less stomach acid, after taking the absorption rate is naturally not high. Organic acid calcium salts, on the other hand, have a lower calcium content and do not require a lot of stomach acid to be absorbed, so the absorption rate is higher. So, how can the elderly buy the right calcium supplement? When buying, make sure to look at the ingredients of the medicine. Calcium carbonate, calcium phosphate and calcium chloride are all inorganic acid calcium salts, while calcium lactate and calcium gluconate are organic acid calcium salts. It is important to note that it is best for the elderly to take calcium supplements after meals. This is because the food in the digestive tract not only reduces the stimulation of the medication on the gastrointestinal tract, but also allows calcium ions to enter the blood slowly, so that the blood calcium concentration is not too high and affects heart health. In addition, most elderly people have some “minor” heart and blood pressure problems and need to take related drugs, and the diuretics in antihypertensive drugs and certain drugs for arrhythmia, are prone to adverse reactions with calcium ions. Therefore, these elderly people should not blindly take calcium supplements, and if they do, they should always keep an eye on their own health so that they can take early measures. In addition, vitamin D is one of the important factors to improve the absorption rate of calcium ions. Elderly people should not rely only on calcium supplements, but should also get more sunlight or take vitamin D orally to promote calcium absorption.