St. John’s Wort Also indexed as: Hypericum, Klamath Weed
Drug Interactions
Certain medicines interact with St. John’s wort: Some interactions may increase the need for St. John’s wort (
), other interactions may be negative (
) and indicate St. John’s wort should not be taken without first speaking with your physician or pharmacist, others may require further explanation (
). Refer to the individual drug article for specific details about an interaction.
Note: The following list only includes the generic or class name of a medicine. To find a specific brand name, use the Medicines index.
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The information presented in Healthnotes is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires June 2009.