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the claim
Herbal medicines cause adverse effects in some users, so being natural does not make them safe or free of side effects.
the verdict
SUPPORTED
the evidence backs this
Recorded sources
10 sources for · 0 against
Is it true that herbal medicines cause adverse effects in some users, so being natural does not make them safe or free of side effects?
Yes. Multiple authoritative sources state that herbal medicines can cause adverse effects and that being natural does not guarantee safety; MedlinePlus and a pharmacology review explicitly reject the misconception that natural products are always safe, while systematic reviews document serious psychiatric, neurological, dermatological, and cardiovascular harms.
Verdict: SUPPORTED · 10 sources for, 0 against · Last checked
Evidence for · 10
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Herbal Medicine. (n.d.). medlineplus.gov. https://medlineplus.gov/herbalmedicine.html
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More for · 9
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Serious psychiatric and neurological adverse effects of herbal medicines – a systematic review. (2003). doi.org. https://doi.org/10.1034/j.1600-0447.2003.00158.x
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Zhou, L., Liu, L., Liu, X., Chen, P., Liu, L., & Zhang, Y. (2014). Systematic Review and Meta-Analysis of the Clinical Efficacy and Adverse Effects of Chinese Herbal Decoction for the Treatment of Gout. doi.org. https://doi.org/10.1371/journal.pone.0085008
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Tsai, H., Lin, H., Lu, Y., Chen, Y., & Mahady, G. B. (2013). A Review of Potential Harmful Interactions between Anticoagulant/Antiplatelet Agents and Chinese Herbal Medicines. doi.org. https://doi.org/10.1371/journal.pone.0064255
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Frontiers | The growing use of herbal medicines: issues relating to adverse reactions and challenges in monitoring safety. (n.d.). frontiersin.org. https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2013.00177/full
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Adverse effects of herbal drugs in dermatology. (2000). doi.org. https://doi.org/10.1046/j.1365-2133.2000.03822.x
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Herbal pharmacovigilance in Nepal: challenges and recommendations. (2020). doi.org. https://doi.org/10.12688/f1000research.22133.1
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The Safety of Herbal Medicine: From Prejudice to Evidence - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.1155/2015/316706
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The Mutagenic and Carcinogenic Effects of Plant Products. (2025). hal.science. https://hal.science/hal-05144580v1
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Gavanji, S. (2022). Cardiotoxicity Effects of Herbal Medicine, A Review Article. doi.org. https://doi.org/10.14421/biomedich.2023.121.89-96
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