Calcium Carbonate
Tums, Children's Pepto, Maalox Children's, and many others including generics; 40% elemental Ca
Calcium supplement, antacid
| C | 2 | Yes | No | No |
| Key |
- Tab, chewable [OTC]: 500, 750, 1000, 1250 mg; may contain aspartame
- Children's Pepto, Maalox Children's [OTC]: 400 mg
- Tab [OTC]: 648, 1250, 1500 mg
- Oral suspension [OTC]: 1250 mg/5 mL (473 mL); may contain parabens
- Powder [OTC]: 800 mg/2 g (480 g)
- Each 1 g of salt contains 20 mEq or 10 mmol (400 mg) elemental Ca.
- Some products may be combined with vitamin D; check package labeling.
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Citation
Hughes, Helen K., and Lauren K. Kahl, editors. "Calcium Carbonate." Harriet Lane Handbook Harriet Lane Handbook, 23rd ed., Elsevier, 2024. Harriet Lane, www.unboundmedicine.com/harrietlane/view/Harriet_Lane_Handbook/309168/0/Calcium_Carbonate.
Calcium Carbonate. In: Hughes HKH, Kahl LKL, eds. Harriet Lane Handbook Harriet Lane Handbook. Elsevier; 2024. https://www.unboundmedicine.com/harrietlane/view/Harriet_Lane_Handbook/309168/0/Calcium_Carbonate. Accessed October 4, 2026.
Calcium Carbonate. (2024). In Hughes, H. K., & Kahl, L. K. (Eds.), Harriet Lane Handbook Harriet Lane Handbook (23rd ed.). Elsevier. https://www.unboundmedicine.com/harrietlane/view/Harriet_Lane_Handbook/309168/0/Calcium_Carbonate
Calcium Carbonate [Internet]. In: Hughes HKH, Kahl LKL, eds. Harriet Lane Handbook Harriet Lane Handbook. Elsevier; 2024. [cited 2026 October 04]. Available from: https://www.unboundmedicine.com/harrietlane/view/Harriet_Lane_Handbook/309168/0/Calcium_Carbonate.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC
T1 - Calcium Carbonate
ID - 309168
ED - Hughes,Helen K,
ED - Kahl,Lauren K,
BT - Harriet Lane Handbook
UR - https://www.unboundmedicine.com/harrietlane/view/Harriet_Lane_Handbook/309168/0/Calcium_Carbonate
PB - Elsevier
ET - 23
DB - Harriet Lane
DP - Unbound Medicine
ER -

Harriet Lane Handbook

