碳酸鈣（Calcium Carbonate）
Overview
Calcium carbonate is a widely available dietary supplement used to prevent or treat calcium deficiency. Calcium is essential for building and maintaining strong bones and teeth, and it is frequently combined with vitamin D and osteoporosis medications to maximize bone health.
Mechanism of Action
Calcium is a major structural component of the skeleton. Adequate calcium intake is necessary for normal bone remodeling and to prevent a negative calcium balance, which leads to bone loss. It is also used as an antacid to neutralize stomach acid in conditions like heartburn or acid indigestion.
Dosage and Administration
For calcium supplementation, the dose depends on dietary intake and age, usually ranging from 500 mg to 1200 mg of elemental calcium daily, divided into smaller doses. Because calcium carbonate requires stomach acid for optimal absorption, it should be taken with food. Doses above 500 mg at one time are not well absorbed.
Side Effects
It is generally well-tolerated. The most common side effects are gastrointestinal, including constipation, gas, and bloating. Excessive intake can lead to hypercalcemia (high blood calcium levels) and increase the risk of kidney stones.
Contraindications
It is contraindicated in patients with hypercalcemia, hypercalciuria (excess calcium in urine), or a history of calcium-based kidney stones. It should be used cautiously in patients with severe renal impairment.
Pregnancy and Lactation
Calcium requirements increase during pregnancy and lactation. Calcium carbonate is safe and often recommended as a supplement during these periods when dietary intake is insufficient.
The medication usage, medical information, and related content provided on this website are for general informational purposes only. Under no circumstances should they be considered a substitute for professional medical advice, diagnosis, or treatment plans. Users must consult a registered doctor, pharmacist, or other qualified healthcare professional before making any medical decisions. Never disregard professional medical advice or delay in seeking it because of something you have read on this website. Do not use the information provided here to self-diagnose or treat any health issues or diseases.
Statement on Information Sources and Objectivity
The medical information and content presented on this website are based on widely recognised medical knowledge and public literature, and have been retrieved, translated, and compiled with the assistance of artificial intelligence (AI) tools. Details regarding disease symptoms, drug indications, mechanisms of action, and side effects are objective medical facts intended purely for general public education and reference.
Limitation of Liability
This website, and those who operate it, accept no legal liability for any of the following:
- Any direct or indirect consequences arising from a user's use of, or reliance on, the information provided on this website.
- Any adverse reactions, side effects, or other impacts resulting from the use of medications or treatments mentioned on this website.
- The accuracy, completeness, or timeliness of the information provided on this website (including content retrieved and compiled via AI).
If you are experiencing a medical emergency, please seek immediate professional medical assistance or call emergency services.
