This Week's Feature
The herb comfrey contains potentially dangerous levels of toxic substances called pyrrolizidine alkaloids. For this reason, comfrey has been taken off the market as an oral supplement. However, topical creams containing comfrey extracts may be safe when used properly, and these remain available.
Herbs & Supplements
This guide to herbs, vitamins, minerals, and other food supplements tells you what's proven to work—and what's not.
Search here for detailed, up-to-date information on complementary and alternative treatments for over 180 medical conditions.
Look up the medications and supplements you take to see if there are interactions you should know about.