I wanted to share a few online resources that I found helpful, in looking for credible information regarding botanical and other herbal supplements, for dietary or therapeutic use. These sites include clinical trials being conducted on effectiveness of substances, approved uses, definitions, latin names, how to use it, what the original source is, etc. Very helpful information for anyone interested in using supplements!
And, as I've been saying, please check with your doctor(s) before using any substance, whether 'natural' or not, and ask your pharmacist if there are any known drug interactions between your prescriptions, OTC medications and supplements.
National Institutes of Health Office of Dietary Supplements
Dr. Weil has a list of his recommended herbal supplements