: any of a large genus (Hypericum of the family Hypericaceae, the Saint-John's-wort family) of cosmopolitan herbs and shrubs with showy pentamerous yellow flowers
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: the dried aerial parts of a Saint-John's-wort (Hypericum perforatum) that are held to relieve depression and are used in herbal remedies and dietary supplements
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Saint-John's-wort 1
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Saint-John's-wort is an herbal dietary supplement that many people take for mild to moderate symptoms of depression, as well as various other conditions.13 Taking this supplement with Zoloft can increase the risk of serotonin syndrome.—Karen Berger, Pharmd, Verywell Health, 20 Feb. 2025
: any of a genus (Hypericum of the family Guttiferae, the Saint-John's-wort family) of herbs and shrubs with showy yellow flowers
especially: one (H. perforatum) of dry soil, roadsides, pastures, and ranges that contains a photodynamic pigment causing dermatitis due to photosensitization in sheep, cattle, horses, and goats when ingested see hypericism
2
: the dried aerial parts of a Saint-John's-wort (Hypericum perforatum) that are held to relieve depression and are used in herbal remedies and dietary supplements
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