- What other names is Calcium known by?
- What is Calcium?
- Is Calcium effective?
- How does Calcium work?
- Are there safety concerns?
- Are there any interactions with medications?
- Dosing considerations for Calcium.
Calcium Safety and Side Effects
Calcium seems to be safe for most people. Calcium can cause some minor side effects such as belching or gas. Taking too much calcium (over 2500 mg/day) might increase the risk of side effects.
Some people shouldn't take calcium unless it is prescribed by their healthcare provider. Calcium should be avoided or used carefully in people who have conditions that cause too much calcium in the blood, such as parathyroid gland disorders and sarcoidosis.
Calcium can also decrease the symptoms of premenstrual syndrome (PMS), especially mood swings, bloating, food cravings, and pain.
There is also some evidence that calcium might lower the risk of getting colon cancer, especially among people who have already had small, noncancerous intestinal growths called "polyps."
Calcium also seems to be able to lower high blood pressure, especially in people with kidney disease or in pregnant women.
Taking calcium does not seem to be effective, however, in preventing bone loss in breast-feeding women, or after kidney or bone marrow transplants.
- Raising calcium levels in people who have low calcium.
- Preventing low calcium levels.
- Use as an antacid as calcium carbonate.
- Reducing phosphate levels in people with kidney disease.
Likely Effective for...
- Preventing bone loss caused by insufficient calcium in the diet. This can reduce the risk of breaking bones.
- Reducing bone loss in people taking drugs called corticosteroids.
- Treating osteoporosis (weak bones).
- Reducing symptoms of premenstrual syndrome (PMS), especially mood swings, bloating, food cravings, and pain.
- Increasing fetal bone density in pregnant women with low calcium intake.
- Reducing thyroid hormone levels in people with kidney failure.
Possibly Effective for...
- Preventing colorectal cancer.
- High blood pressure.
- Reducing tooth loss in elderly people.
- High cholesterol.
- Preventing fluoride poisoning in children when taken with vitamin C and D.
- Preventing stroke.
- Reducing weight and body fat while dieting.
Possibly Ineffective for...
- Preventing breast cancer.
- Reducing lead levels in breast-feeding women.
Insufficient Evidence to Rate Effectiveness for...
- Preventing seizures, preventing falls, metabolic syndrome, cancer, pregnancy-related leg cramps, diabetes, Lyme disease, and other conditions.
Natural Medicines Comprehensive Database rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, and Insufficient Evidence to Rate (detailed description of each of the ratings).
Next: How does Calcium work?
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Get tips and advances in treatment.