Zinc Absorption From Zinc Citrate, Zinc Gluconate and Zinc Oxide

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.

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