Calcium bioavailability from calcium carbonate andcalcium citrate

M. J. Nicar, C. Y C Pak

Research output: Contribution to journalArticlepeer-review

114 Scopus citations


Fourteen normal subjects took 1000 mg calcium orally as calcium citrate or calcium carbonate. The amount of calcium absorbed was estimated from the rise 1n urinary calcium. The urinary calcium following calcium citrate load significantly higher (by 20-66%), whether expressed as the total amount or as the Increment above basal (fasting) excretion. Thus, calcium citrate provides a more optimum calcium b1o-availability than calcium carbonate.

Original languageEnglish (US)
Pages (from-to)391-393
Number of pages3
JournalJournal of Clinical Endocrinology and Metabolism
Issue number2
StatePublished - Aug 1985

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Biochemistry
  • Endocrinology
  • Clinical Biochemistry
  • Biochemistry, medical


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