Calcium Supplements (Systemic)

Side Effects of This Dietary Supplement

Along with its needed effects, a dietary supplement may cause some unwanted effects. Although the following side effects occur very rarely when the calcium supplement is taken as recommended, they may be more likely to occur if:

• It is taken in large doses.
• It is taken for a long time.
• It is taken by patients with kidney disease.

Check with your health care professional as soon as possible if any of the following side effects occur:

More common (for injection form only)

Dizziness; flushing and/or sensation of warmth or heat; irregular heartbeat; nausea or vomiting; skin redness, rash, pain, or burning at injection site; sweating; tingling sensation

Rare

Difficult or painful urination; drowsiness; nausea or vomiting (continuing); weakness

Early signs of overdose

Constipation (severe) ; dryness of mouth ; headache (continuing) ; increased thirst ; irritability ; loss of appetite ; mental depression ; metallic taste ; unusual tiredness or weakness

Late signs of overdose

Confusion ; drowsiness (severe) ; high blood pressure ; increased sensitivity of eyes or skin to light ; irregular, fast, or slow heartbeat; unusually large amount of urine or increased frequency of urination

Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your health care professional.