Researchers from the Mayo Clinic in Rochester, Minnesota have reviewed the evidence and report that most interactions are confined to a relatively small number of drug classes and supplements.
First, the details.
- 1818 patients treated at the Mayo Clinic in 6 different specialty clinics were surveyed for their use of dietary supplements.
 - Concurrent use of prescription drugs was obtained from patients’ medical records.
 - A computerized search was used to assess the potential significance of each interaction on the patients’ health.
 
And, the results.
- 710 (40%) of the 1795 patients who responded reported use of dietary supplements.
 - 107 interactions with potential clinical significance were identified.
 - The 5 most common natural products with a potential for interaction accounted for 68% of the potential clinically significant interactions.
 - Garlic
 - Valerian
 - Kava
 - Ginkgo
 - St John’s wort
 - The 4 most common classes of prescription medications with a potential for interaction accounted for 94% of the potential clinically significant interactions.
 - Antithrombotic medications
 - Sedative
 - Antidepressant drugs
 - Antidiabetes drugs
 
The bottom line?
No patient was harmed seriously from any interaction.
It’s still a good idea to include a list of your supplements with your prescription drugs when you go to the doctor.
3/22/08 20:31 JR