Slideshows Images Quizzes
font size

Calcium Citrate

Medical and Pharmacy Editor:

Brand Name: Cal-Cee, Cal-C-Cap

Generic Name: Calcium Citrate

Drug Class:Calcium Salts

What Is Calcium Citrate and How Does It Work?

Calcium citrate is used to prevent or treat low blood calcium levels in people who do not get enough calcium from their diets. It may be used to treat conditions caused by low calcium levels such as bone loss (osteoporosis), weak bones (osteomalacia/rickets), decreased activity of the parathyroid gland (hypoparathyroidism), and a certain muscle disease (latent tetany). It may also be used in certain patients to make sure they are getting enough calcium (e.g., women who are pregnant, nursing, or postmenopausal, people taking certain medications such as phenytoin, phenobarbital, or prednisone).

Calcium plays a very important role in the body. It is necessary for normal functioning of nerves, cells, muscle, and bone. If there is not enough calcium in the blood, then the body will take calcium from bones, thereby weakening bones. Having the right amount of calcium is important for building and keeping strong bones.

Calcium citrate is available under the following different brand names: Cal-Cee and Cal-C-Cap.

Dosages of Calcium Citrate:

Dosage Forms and Strengths


  • 150mg
  • 200mg
  • 250mg
  • 950mg
  • 1040mg


  • 760mg/3.5g

Dosage Considerations – Should be Given as Follows:

Recommended Daily Allowance (RDA) (Elemental Calcium)

  • Age less than 50 years: 1 g/day
  • Over 50 years females: 1.2 g/day
  • Over 50 years males: 1 g/day
  • Over 70 years males: 1.2 g/day
  • Children under 6 months old: 200 mg/day
  • Children 6-12 months old: 260 mg/day
  • Children 1-3 years old: 700 mg/day
  • Children 4-8 years old: 1000 mg/day
  • Children 9-18 years old: 1300 mg/day

Hypocalcemia Prevention

  • Adults: 1 g/day in divided doses

Hypocalcemia, Pediatric

  • Neonates: 50-150 mg/kg/day divided every 4-6 hours orally; dose expressed as elemental calcium; no more than 1g/day
  • Children: 45-65 mg/kg/day divided every 6 hours orally; dose expressed as elemental calcium

Primary Osteoporosis Prevention

  • 1-1.5 g/day in divided doses

Other Information

  • 211 mg elemental calcium (Ca) per gram of calcium citrate
  • Most commercial products also contain Vitamin D

Other Indications and Uses

  • Oral calcium (Ca) supplements may protect against renal calculi formation by chelating with oxalate in gut and preventing its absorption
Medically Reviewed by a Doctor on 10/25/2017

Women's Health

Find out what women really need.

Use Pill Finder Find it Now See Interactions

Pill Identifier on RxList

  • quick, easy,
    pill identification

Find a Local Pharmacy

  • including 24 hour, pharmacies

Interaction Checker

  • Check potential drug interactions
Search the Medical Dictionary for Health Definitions & Medical Abbreviations

Health Solutions From Our Sponsors