Calcium Carbonate

DEA Class;OTC

Common Brand Names; Tums, Tums Chewy Delights, Tums Extra, Tums Freshers, Tums Kids, Tums Regular, Tums Smoothies, Tums Ultra, Children’s Pepto, Calci-Chew, Caltrate 600, Oysco 500

Antacid: Neutralizes gastric acidity

Dietary supplement: Prevents or treats negative Ca balance; oral Ca supplements may protect against renal calculi formation by chelating with oxalate in gut and preventing its absorption

Phosphate binder: Binds with dietary phosphate to form insoluble calcium phosphate, which is excreted in feces

Hypersensitivity

Hypercalciuria

Renal calculi

Hypophosphatemia

Hypercalcemia

Suspected digoxin toxicity

Anorexia

Constipation

Flatulence

Nausea

Vomiting

Hypercalcemia

Hypophosphatemia

Milk-alkali syndrome

Shake suspension well; chew tablets thoroughly

Bloating, gas, and constipation may occur with therapy

Hypercalcemia may occur from long-term use, which may exacerbate nephrolithiasis or cause generalized soft tissue and vascular calcification; may also increase mortality in patients with chronic kidney disease

Drug administration impaired by achlorhydria, common in the elderly; consider using an alternate salt form of calcium

Hypercalciuria and hypercalcemia may occur in patients with hypoparathyroid disease, receiving high doses of vitamin D

Kidney stones reported with use; exercise caution in patients with history

Use caution in patients with renal insufficiency; patients more susceptible to effects of excess calcium

Advise patients to limit intake of oxalate-rich foods (soy; green, leafy vegetables; animal protein) to avoid reduced absorption through Ca-oxalate formation

Pregnancy category: C

Lactation: Safe; crosses the placenta; appears in breast milk

calcium carbonate

suspension, oral

• 1250mg (elemental calcium 500mg per 5 mL)

tablet

• 1250mg (elemental calcium 500 mg) (Oysco, generic)
• 1500mg (elemental calcium 600 mg) (Caltrate)

tablet, chewable

• 400mg (Pepto Kids)
• 500mg (Tums Regular, Tums Freshers)
• 750mg (Tums Chewy Bites, Tums Extra, Tums Kids, Tums Smoothies)
• 1000mg (Tums Ultra)
• 1177mg (Tums Chewy Delights)