Zinc Absorption From Zinc Citrate, Zinc Gluconate and Zinc Oxide

January 3, 2013 updated by: Prof. Michael B. Zimmermann

Zinc Absorption From Zinc Supplements Comparing Zinc Citrate to Zinc Gluconate and Zinc Oxide in Young Adults

The goal of this trial is to evaluate zinc citrate, a zinc compound with promising sensory properties and a high zinc content, as an alternative zinc compound to be used for supplementation or food fortification. The bioavailability of zinc citrate given as a supplement to young Swiss adults will be assessed and compared to the bioavailability of the commonly used zinc compounds zinc gluconate and zinc oxide.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

15

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 45 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Male or female of 18 to 45 years old
  • Body Mass Index in the range of 19 to 25
  • No mineral and vitamin supplements two weeks prior to the study and during the whole duration of the study

Exclusion Criteria:

  • Any metabolic, gastrointestinal or chronic disease (according to the subjects own statement)
  • Long-term medication during the whole study (except for contraceptives)
  • Vegans
  • Pregnancy
  • Lactation
  • Intention to become pregnant during the course of the study
  • Lack of safe contraception
  • Consumption of mineral and vitamin supplements within 2 weeks prior to 1st test supplement administration
  • Earlier participation in any nutrition study using Zn stable isotopes as well as participation in any other clinical study within the last 30 days and during this study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: zinc citrate
Dietary supplement: zinc citrate
10 mg of zinc as either zinc citrate
Active Comparator: zinc gluconate
Dietary supplement: Zinc Gluconate
10 mg of zinc as either zinc gluconate
Active Comparator: zinc oxide
Dietary supplement: Zinc oxide
10 mg of zinc as either zinc oxide

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Fractional absorption of zinc
Time Frame: 61 days
Fractional absorption of zinc is estimated by using the double isotope tracer ratio technique by administering 67Zn as oral and 70Zn as intravenous stable isotopes.The urinary enrichment with both isotopes is measured in a spot urine sample by inductively coupled plasma mass spectrometry.
61 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Prof. Michael B. Zimmermann

Collaborators

University of Zurich

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

March 1, 2012

Primary Completion (Actual)

May 1, 2012

Study Completion (Actual)

November 1, 2012

Study Registration Dates

First Submitted

April 4, 2012

First Submitted That Met QC Criteria

April 11, 2012

First Posted (Estimate)

April 12, 2012

Study Record Updates

Last Update Posted (Estimate)

January 4, 2013

Last Update Submitted That Met QC Criteria

January 3, 2013

Last Verified

January 1, 2013

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • HNL/CTC11-12

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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