What it does: The herb’s key compounds, hypericin and hyperforin, are studied for their ability to modulate neurotransmitter activity in the brain, which may help support mood and emotional balance.
How it is used: St John's Wort is most often taken as a supplement to promote a positive mood, emotional well-being, and resilience during periods of mild stress or low mood.
Natural sources and supplement forms: It naturally occurs in the Hypericum perforatum plant and is offered in supplements as dried whole herb, powdered extract, or standardized extract—often provided in capsules, tablets, or liquid tinctures.
Why it appears in supplement formulas: This extract is chosen for its traditional and researched role in supporting mood, making it a popular option for herbal-based emotional well-being blends.
What to know before use: St John's Wort can interact with various medications, including antidepressants and oral contraceptives, so consult your healthcare provider before use if you take prescriptions or have medical conditions.
Yellow Flowers With a Storied Past
St John's Wort comes from the bright yellow flowers of Hypericum perforatum, a wild plant native to Europe. It gets its name from blooming around St. John’s Day (June 24). Traditionally, people noticed tiny translucent dots on its leaves, which are actually special oil glands unique to this plant. These natural oils are why St John's Wort remains popular in supplement blends today.
