Screening for consistency and contamination within and between bottles of 29 herbal supplements.

In the United States the marketing of dietary supplements, of which the majority are herbal supplements, is currently a multibillion-dollar industry involving use from over half of the adult population. Due to their frequency of use and the lack of regulation of herbal supplements by the Food and Dr...

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Autores principales:	Maren E Veatch-Blohm, Iris Chicas, Kathryn Margolis, Rachael Vanderminden, Marisa Gochie, Khusmanie Lila
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c143f991f0a74edd98b34e42353fc588
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spelling	oai:doaj.org-article:c143f991f0a74edd98b34e42353fc5882021-12-02T20:16:13ZScreening for consistency and contamination within and between bottles of 29 herbal supplements.1932-620310.1371/journal.pone.0260463https://doaj.org/article/c143f991f0a74edd98b34e42353fc5882021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0260463https://doaj.org/toc/1932-6203In the United States the marketing of dietary supplements, of which the majority are herbal supplements, is currently a multibillion-dollar industry involving use from over half of the adult population. Due to their frequency of use and the lack of regulation of herbal supplements by the Food and Drug Administration (FDA) it is important for the health and safety of consumers to know about consistency of supplements and any possible contamination by harmful products, such as heavy metals or microorganisms. The purpose of the study was to determine consistency and contamination within and between bottles of common herbal supplements. Duplicate bottles of 29 herbal supplements were tested for consistency for antioxidant activity, phenolic concentration and flavonoid concentration under methanolic and water extraction. The supplements were also analyzed for the presence of metals and fungal contaminants. For all of the supplements tested there was high variability around the mean in antioxidant activity, phenolic concentrations and flavonoid concentrations, with coefficients of variation (CV) ranging from 0-120. Zinc was found in almost 90% of the supplements, nickel in about half of the supplements and lead in none of the supplements. Approximately 60% of the supplements contained fungal isolates. Although the majority of the fungi that were found in the supplements are generally not hazardous to human health, many of them could be problematic to sensitive groups, such as immunocompromised individuals. The data, which demonstrates contamination and a lack of consistency, in conjunction with previous studies on supplement contamination, strengthen the case that the FDA should regulate over-the-counter herbal supplements the same way that they regulate food and drugs. Until such time it is crucial that consumers are informed that many of the supplements that they take may lack the standardization that would reduce the chance of contamination and lead to consistency from one pill to the next.Maren E Veatch-BlohmIris ChicasKathryn MargolisRachael VandermindenMarisa GochieKhusmanie LilaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 11, p e0260463 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Maren E Veatch-Blohm Iris Chicas Kathryn Margolis Rachael Vanderminden Marisa Gochie Khusmanie Lila Screening for consistency and contamination within and between bottles of 29 herbal supplements.
description	In the United States the marketing of dietary supplements, of which the majority are herbal supplements, is currently a multibillion-dollar industry involving use from over half of the adult population. Due to their frequency of use and the lack of regulation of herbal supplements by the Food and Drug Administration (FDA) it is important for the health and safety of consumers to know about consistency of supplements and any possible contamination by harmful products, such as heavy metals or microorganisms. The purpose of the study was to determine consistency and contamination within and between bottles of common herbal supplements. Duplicate bottles of 29 herbal supplements were tested for consistency for antioxidant activity, phenolic concentration and flavonoid concentration under methanolic and water extraction. The supplements were also analyzed for the presence of metals and fungal contaminants. For all of the supplements tested there was high variability around the mean in antioxidant activity, phenolic concentrations and flavonoid concentrations, with coefficients of variation (CV) ranging from 0-120. Zinc was found in almost 90% of the supplements, nickel in about half of the supplements and lead in none of the supplements. Approximately 60% of the supplements contained fungal isolates. Although the majority of the fungi that were found in the supplements are generally not hazardous to human health, many of them could be problematic to sensitive groups, such as immunocompromised individuals. The data, which demonstrates contamination and a lack of consistency, in conjunction with previous studies on supplement contamination, strengthen the case that the FDA should regulate over-the-counter herbal supplements the same way that they regulate food and drugs. Until such time it is crucial that consumers are informed that many of the supplements that they take may lack the standardization that would reduce the chance of contamination and lead to consistency from one pill to the next.
format	article
author	Maren E Veatch-Blohm Iris Chicas Kathryn Margolis Rachael Vanderminden Marisa Gochie Khusmanie Lila
author_facet	Maren E Veatch-Blohm Iris Chicas Kathryn Margolis Rachael Vanderminden Marisa Gochie Khusmanie Lila
author_sort	Maren E Veatch-Blohm
title	Screening for consistency and contamination within and between bottles of 29 herbal supplements.
title_short	Screening for consistency and contamination within and between bottles of 29 herbal supplements.
title_full	Screening for consistency and contamination within and between bottles of 29 herbal supplements.
title_fullStr	Screening for consistency and contamination within and between bottles of 29 herbal supplements.
title_full_unstemmed	Screening for consistency and contamination within and between bottles of 29 herbal supplements.
title_sort	screening for consistency and contamination within and between bottles of 29 herbal supplements.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/c143f991f0a74edd98b34e42353fc588
work_keys_str_mv	AT mareneveatchblohm screeningforconsistencyandcontaminationwithinandbetweenbottlesof29herbalsupplements AT irischicas screeningforconsistencyandcontaminationwithinandbetweenbottlesof29herbalsupplements AT kathrynmargolis screeningforconsistencyandcontaminationwithinandbetweenbottlesof29herbalsupplements AT rachaelvanderminden screeningforconsistencyandcontaminationwithinandbetweenbottlesof29herbalsupplements AT marisagochie screeningforconsistencyandcontaminationwithinandbetweenbottlesof29herbalsupplements AT khusmanielila screeningforconsistencyandcontaminationwithinandbetweenbottlesof29herbalsupplements
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Screening for consistency and contamination within and between bottles of 29 herbal supplements.

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