RESEARCH PAPER
An analysis of zinc and copper concentration in vitamin-mineral dietary supplements and the safety of their administration
1
Medical University of Silesia, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Department of Toxicology and Bioanalysis, Sosnowiec, Poland Dyrektor: dr hab. n. med. J. Stojko
2
Silesian University of Technology, Institute of Water and Wastewater Engineering, Gliwice, Poland Dyrektor jednostki: dr hab. inż. M. Dudziak
Corresponding author
Agnieszka Fischer
Medical University of Silesia Department of Toxicology and Bioanalysis 4 Jagiellońska Street, 41 200 Sosnowiec, Poland
Medical University of Silesia Department of Toxicology and Bioanalysis 4 Jagiellońska Street, 41 200 Sosnowiec, Poland
Med Srod. 2018;21(2):22–29
KEYWORDS
ABSTRACT
Introduction:
Zinc and cooper are microelements necessary for the proper functioning of the human organism. About 20–40% of the population suffers from too low a supply of zinc, which is why this element requires frequent supplementation. Multicomponent diet supplements are often used as a source of minerals (also Zn and Cu) for the body.
Material and Methods:
22 vitamin-mineral dietary supplements purchased from local pharmacies were analyzed. The concentration of Zn and Cu in the samples was determined with the flame AAS method.
Results:
The concentration of Zn and Cu determined in the samples was often different from that declared by manufacturers. The administration of dietary supplements provided around 30–150% of the recommended daily intake for Zn and Cu.
Conclusions:
Dietary supplements require legal regulations regarding their quality.
Zinc and cooper are microelements necessary for the proper functioning of the human organism. About 20–40% of the population suffers from too low a supply of zinc, which is why this element requires frequent supplementation. Multicomponent diet supplements are often used as a source of minerals (also Zn and Cu) for the body.
Material and Methods:
22 vitamin-mineral dietary supplements purchased from local pharmacies were analyzed. The concentration of Zn and Cu in the samples was determined with the flame AAS method.
Results:
The concentration of Zn and Cu determined in the samples was often different from that declared by manufacturers. The administration of dietary supplements provided around 30–150% of the recommended daily intake for Zn and Cu.
Conclusions:
Dietary supplements require legal regulations regarding their quality.
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