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. 2023 Sep 8;15(18):3912. doi: 10.3390/nu15183912

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Images of samples prior to extraction. BPF, P. nigrum; CC, Fresh Ground Cloves Herbal Supplement, Kroeger Herb^® Products Co., Inc.; CF, S. aromaticum; EC, Sambucol Black Elderberry Cold and Flu, Pharmacare Laboratories Pty Ltd.; EF, S. nigra; LBC, Nature’s Sunshine Lemon Balm, Nature’s Sunshine Products of Australia Pty Ltd.; LBF, M. officinalis; QGP, P. salicina; R8, Relax–Stress Relief, Regul8 Pty Ltd.; SC, Hilde Hemmes’ Herbals Sage 1000 capsule, Herbal Supplies Pty Ltd.; SF, S. officinalis; WC, WelleCo Super Boosters Immune system support with Kakadu Plum, Welle Pty Ltd.