There are many research trials in alternative and complementary medicine currently in progress at the National Institutes of Health, however three clinical trials listed below deal specifically with herbs.
1. Drug Interaction Study of Tegretol (Carbamazepine) and St. John's Wort
in Normal Volunteers.
2. Study of Possible Mood Changes and Mechanism of Action of St. John's
3. Ginkgo Biloba Prevention Trial in Older