Comparison of Absorbability Between Calcium Tablet and Calcium Ion Water

This study has been completed.
Information provided by (Responsible Party):
Fumiko Higashikawa, Hiroshima University Identifier:
First received: December 13, 2012
Last updated: March 26, 2013
Last verified: March 2013
The purpose of this study is to evaluate the absorbability of calcium tablet and calcium ion water.

Condition Intervention
Dietary Supplement: Calcium tablet
Dietary Supplement: Calcium ion water (250mg)
Dietary Supplement: Calcium ion water (125mg)

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Pharmacokinetics Study
Intervention Model: Crossover Assignment
Masking: Double Blind (Subject, Investigator, Outcomes Assessor)
Primary Purpose: Prevention
Official Title: A Randomized, Double-blind, Crossover Study to Compare the Absorbability Between Calcium Tablet and Calcium Ion Water

Resource links provided by NLM:

Further study details as provided by Hiroshima University:

Primary Outcome Measures:
  • Serum calcium profile (including AUC, Cmax, and Tmax) [ Time Frame: Overall 2 hours ] [ Designated as safety issue: No ]

Estimated Enrollment: 10
Study Start Date: November 2012
Study Completion Date: February 2013
Primary Completion Date: February 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Calcium tablet
250 mg calcium/tablet
Dietary Supplement: Calcium tablet
Experimental: Calcium ion water (250mg)
250 mg calcium in 200 ml water
Dietary Supplement: Calcium ion water (250mg)
Experimental: Calcium ion water (125mg)
125 mg calcium in 200 ml water
Dietary Supplement: Calcium ion water (125mg)


Ages Eligible for Study:   55 Years to 70 Years
Genders Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Postmenopausal females

Exclusion Criteria:

  • Taking medicines or functional food that affect serum calcium levels
  • Diseases that affect bone
  • Renal or hepatic dysfunction
  • Heart disease
  • Participation in any clinical trial within 90 days of the commencement of the trial
  Contacts and Locations
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Please refer to this study by its identifier: NCT01751204

Hiroshima University
Hiroshima,, Japan, 734-8551
Sponsors and Collaborators
Hiroshima University
Principal Investigator: Fumiko Higashikawa, PhD Hiroshima University
  More Information

Responsible Party: Fumiko Higashikawa, Associate Professor, Hiroshima University Identifier: NCT01751204     History of Changes
Other Study ID Numbers: eki-677 
Study First Received: December 13, 2012
Last Updated: March 26, 2013
Health Authority: Japan: Institutional Review Board

Additional relevant MeSH terms:
Calcium, Dietary
Bone Density Conservation Agents
Physiological Effects of Drugs processed this record on May 26, 2016