Comparison of Three Calcium Supplements

Comparison of Three Calcium Supplements With Regard to Their Metabolic Effects in Healthy Adults

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03286673

Enrollment

Registered

2017-09-18

Start date

2006-10-31

Completion date

2007-03-31

Last updated

2017-09-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy

Keywords

calcium carbonate, calcium phosphate, metabolic effects, human study, calcium and phosphorus metabolism

Brief summary

The study was conducted to investigate the metabolic effects of three different calcium compounds in healthy adults.

Interventions

DIETARY_SUPPLEMENTcalcium phosphate

DIETARY_SUPPLEMENTTricalcium Phosphate

DIETARY_SUPPLEMENTCalcium carbonate

DIETARY_SUPPLEMENTPlacebo

Study design

Allocation

RANDOMIZED

Intervention model

CROSSOVER

Primary purpose

TREATMENT

Masking

QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

18 Years to 40 Years

Healthy volunteers

Yes

Inclusion criteria

* age 18 - 40 years

Exclusion criteria

* diseases of the gastrointestinal tract * pregnancy * the intake of any medication (e. g. for thyroid gland) * intake of dietary supplements

Design outcomes

Primary

Measure	Time frame	Description
Serum mineral concentration	after 4 weeks of each intervention	Calcium and Phosphate (and others) concentration in serum.
Stool mineral concentration	after 4 weeks of each intervention	Calcium and Phosphate concentration (and others) in stool from a three day stool collection
Urine mineral concentration	after 4 weeks of each intervention	Calcium and Phosphate concentration (and others) in urine from a three day urine collection
Lipids in blood	after 4 weeks of each intervention	Lipids and lipoprotein concentration in serum.
Sterols	after 4 weeks of each intervention	Neutrals sterols and bile acids in stool from a three day stool collection
Dietary intake	after 4 weeks of each intervention	Evaluation of the dietary intake using a three day weighed dietary record.

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026