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Conclusion: Individualised herbal medicine, as practised in European medical herbalism, Chinese herbal medicine and Ayurvedic herbal medicine, has a very sparse evidence base and there is no convincing evidence that it is effective in any indication. Because of the high potential for adverse events and negative herb–herb and herb–drug interactions, this lack of evidence for effectiveness means that its use cannot be recommended. R Guo , P H Canter , E Ernst, Postgraduate Medical Journal 2007;83:633-637 (October 2007)