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Herbal products are often contaminated, study finds

BMJ 2013; 347 doi: (Published 11 October 2013) Cite this as: BMJ 2013;347:f6138
  1. Jacqui Wise
  1. 1London

Herbal medicines are frequently contaminated or contain plant species that are a substitute for the plants listed on the label or contain other species that may be a filler, a DNA analysis has found.

Some of the herbal medicines analysed were contaminated with plants that have known toxicity or can interact with other supplements or medications, the study reported in the open access journal BMC Medicine …

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