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Article

Is the Magnesium Content in Food Supplements Consistent with the Manufacturers’ Declarations?

Department of Bromatology, Faculty of Pharmacy with the Division of Laboratory Medicine, Medical University of Białystok, Mickiewicza 2D Street, 15-222 Białystok, Poland
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Lutz Schomburg
Nutrients 2021, 13(10), 3416; https://doi.org/10.3390/nu13103416
Received: 12 September 2021 / Revised: 24 September 2021 / Accepted: 25 September 2021 / Published: 28 September 2021
Food supplements (FS) are gaining more and more popularity because they are a quick way to compensate for deficiencies in the diet. Due to their affordable price and easy-to-take form, they are eaten by all age groups and by healthy and sick people. There are many categories of this type of preparations on the market, and FS with magnesium (Mg) are some of the most commonly used. Therefore, the aim of the study was to determine the Mg content in FS and to compare the estimated value with that declared by the manufacturer. The study included 116 FS containing Mg. In order to determine the Mg content, the atomic absorption spectrometry (AAS) method was used. The tested FS were divided in terms of the declared content, pharmaceutical form, chemical form of Mg, composition complexity, and price. It was shown that in the case of 58.7% of the samples, the Mg content was different than the permissible tolerance limits set by the Polish chief sanitary inspectorate, which range from −20% to +45%. It has been estimated that as a result of the differences in the content, the patient may take up to 304% more Mg per day or 98% less than it is stated in the declaration. The above results indicate that the quality and safety of FS should be more closely monitored. View Full-Text
Keywords: magnesium; pharmacy; food supplements; drugstore magnesium; pharmacy; food supplements; drugstore
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MDPI and ACS Style

Puścion-Jakubik, A.; Bartosiewicz, N.; Socha, K. Is the Magnesium Content in Food Supplements Consistent with the Manufacturers’ Declarations? Nutrients 2021, 13, 3416. https://doi.org/10.3390/nu13103416

AMA Style

Puścion-Jakubik A, Bartosiewicz N, Socha K. Is the Magnesium Content in Food Supplements Consistent with the Manufacturers’ Declarations? Nutrients. 2021; 13(10):3416. https://doi.org/10.3390/nu13103416

Chicago/Turabian Style

Puścion-Jakubik, Anna, Natalia Bartosiewicz, and Katarzyna Socha. 2021. "Is the Magnesium Content in Food Supplements Consistent with the Manufacturers’ Declarations?" Nutrients 13, no. 10: 3416. https://doi.org/10.3390/nu13103416

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