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St. John's wort

Plant that contains several components that can cause a negative reaction on skin when it is exposed to sunlight; however, this is a bigger concern when St. John's wort is taken orally. Like most plants, it's a rich source of antioxidants.

References for this information:

International Journal of Toxicology, Volume 20, 2001, Supplement pages 31-39

Hautarzt, April 1997, pages 249-52.

American Herbal Pharmacopoeia, 1997, pages 1-32

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