No

Calcium Salt

Antacid; treatment and prevention of calcium deficiency or hyperphosphatemia (eg, osteoporosis, osteomalacia, mild/moderate renal insufficiency, hypoparathyroidism, postmenopausal osteoporosis, rickets)

C

Hypercalcemia; renal calculi; ventricular fibrillation

Mild hypercalcemia (calcium: >10.5 mg/dL) may be asymptomatic or manifest itself as constipation, anorexia, nausea, and vomiting

More severe hypercalcemia (calcium: >12 mg/dL) is associated with confusion, delirium, stupor, and coma

<1%:

Central nervous system: Headache

Endocrine & metabolic: Hypophosphatemia, hypercalcemia

Gastrointestinal: Nausea, anorexia, vomiting, abdominal pain, constipation

Miscellaneous: Thirst

Decreased effect:

Calcium citrate may significantly decrease the bioavailability of tetracyclines and fluoroquinolones, iron salts with salicylates

Large intakes of dietary fiber may decrease calcium absorption due to a decreased GI transit time and the formation of fiber-calcium complexes

Increased effect: Calcium citrate may increase the effects of quinidine

Moderates nerve and muscle performance via action potential excitation threshold regulation

Absorption: From the GI tract requires vitamin D

Oral: Dosage is in terms of elemental calcium

<6 months: 360 mg/day

6-12 months: 540 mg/day

1-10 years: 800 mg/day

10-18 years: 1200 mg/day

Adults: 1-2 g/day

Dietary supplement: Usual dose: 500 mg to 2 g 2-4 times/day

May cause confusion and delirium (as a consequence of hypercalcemia)

None reported

No information available to require special precautions

No effects or complications reported

Chew tablets well, followed by water; do not take calcium supplements within 1-2 hours of taking other medicine by mouth or eating large amounts of fiber-rich foods; do not drink large amounts of alcohol or caffeine-containing beverages or use tobacco

Monitor serum calcium

Elemental calcium listed in brackets

Effervescent: 2376 mg [500 mg]