What calcium supplements are effective for middle-aged and elderly people to improve calcium intake?

Generally, middle-aged and elderly individuals may achieve better calcium supplementation effects by taking calcium tablets such as calcium carbonate D3 tablets, calcium lactate tablets, calcium gluconate tablets, calcium citrate tablets, and oyster calcium carbonate chewable tablets, but they should follow medical advice when using these supplements. Detailed explanations are as follows:

1. Calcium Carbonate D3 Tablets

Calcium carbonate D3 tablets mainly contain calcium carbonate and vitamin D3. Calcium carbonate has a high calcium content and provides an adequate calcium source for middle-aged and elderly individuals. Vitamin D3 promotes intestinal calcium absorption, enhances renal tubular reabsorption of calcium, and regulates bone metabolism, helping increase blood calcium levels, enhancing calcium supplementation effects, and preventing and treating osteoporosis.

2. Calcium Lactate Tablets

Calcium lactate tablets are an organic calcium source with good solubility and minimal gastrointestinal irritation. They generally do not require significant amounts of gastric acid for decomposition and are suitable for middle-aged and elderly individuals with reduced gastric acid secretion. After entering the body, calcium lactate is rapidly absorbed and utilized, helping to supplement calcium and enhance bone density to a certain extent.

3. Calcium Gluconate Tablets

Calcium gluconate tablets are a type of organic calcium with relatively low calcium content but offer better taste, making them more acceptable, and cause minimal gastrointestinal irritation. Calcium gluconate has high solubility in water and can dissolve quickly and be absorbed by the body. It can be used for the prevention and treatment of calcium deficiency disorders, such as osteoporosis and tetany.

4. Calcium Citrate Tablets

Calcium citrate tablets are also an organic calcium form with good solubility. They can be absorbed without being activated by gastric acid and dissociate well in both acidic and alkaline environments, making them particularly suitable for the elderly and individuals with low gastric acid levels. Additionally, calcium citrate can help reduce the risk of kidney stones.

5. Oyster Calcium Carbonate Chewable Tablets

Oyster calcium carbonate chewable tablets are made from oyster shells and primarily contain calcium carbonate. These tablets are naturally sourced, have a high calcium content, and contain various trace elements such as zinc and iron, which play a certain role in maintaining normal physiological functions. The chewable formulation makes them easy to take and facilitates calcium absorption.

In daily life, middle-aged and elderly individuals should also get more sun exposure to promote vitamin D synthesis, aiding calcium absorption. At the same time, engaging in moderate physical activity, such as walking or tai chi, can help strengthen bone strength.