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St. John's wort (Hypericum perforatum L.) is a medicinal plant traditionally used, both externally and internally, in all Europe for many pathologies. Paracelsus named it ''arnica of the nerves'' because of its empirical use in nervous diseases. In the last two decades many studies have proved the efficacy of some St. John's wort extracts in mild to moderate depression and it has been successful as...
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