St. Johns Wort

St. John's Wort or Hypericum perforatum is one of the most widely-known treatments that herbalists use for depression, and it is reported to be as effective as pharmaceutical anti-depressants, with fewer side effects. A prescription is required to purchase the herb in Ireland. One of its active constituents, hyperforin, has also been found to have antibacterial properties. St John’s Wort is toxic to grazing animals in large doses.