There is a lot of bad information on the internet regarding herbs and supplements for health. Many websites are full of self-promoting testimonials, or even direct sales advertising for their products.  It’s very difficult to find non-biased information and research results. This website, Natural Medicines Database, is a terrific source for both consumers and medical professionals. Especially useful is their free Clinical Management Series of evidence-based research on major illnesses. Much of the rest of the website requires a fee.