St John's Wort - safety alerts & advisory statements

St John's Wort (Hypericum perforatum) is an ingredient in complementary medicines which are available without prescription from pharmacies, health food shops, supermarkets, complementary medicine practitioners and other sources. St John's Wort preparations taken by mouth (eg, tablets, capsules or liquids) may interact with some prescription medicines, stopping them from working properly.

• TGA alert to doctors and pharmacists and complementary health practitioners - Important interactions between St John's Wort (Hypericum perforatum) preparations and prescription medicines
  <http://www.tga.gov.au/docs/html/alert.htm>
  15 March 2001
• Information for consumers taking St John's Wort
  <http://www.tga.gov.au/docs/html/sjwinfo.htm>
  5 September 2000
• St John's Wort - Information sheet for health care professionals
  <http://www.tga.gov.au/docs/html/info.htm>
  13 March 2000