St. John's Wort for Depression Support

Research suggests that the single available study linked here does not directly address St. John's Wort's use for depression support. The one included study is a laboratory cell-culture investigation examining antiviral activity against SARS-CoV-2, which is unrelated to mood or mental health applications. While a substantial body of research exists elsewhere on Hypericum perforatum and depression — including numerous randomized controlled trials and meta-analyses — none of that evidence is represented in the studies provided for this synthesis. Readers interested in the depression-related evidence base for St. John's Wort would need to consult that broader literature separately.