Many herbs and plants are said to have healing and health-giving properties. How effective and safe are these herbs? Is most of the evidence anecdotal or based on scientific, clinical research?
Herbs May contain several active principles.. some could be beneficial while others harmful.. so it is difficult usually to determine the activity Of all active principles n most of the herbs are claimed to be active in particular condition due to one or few active principles..other unknowns May be harmful ..
Many scientific studies have been conducted on herbs. Traditionally, herbs are the oldest forms of medicine. They have been used for millennia--and very successfully. There are, of course, some herbs that are harmful, but these are known and catalogued. I used herbs clinically without any harmful effects for 46 years (since 1972). There are many good sources and resources to learn about the beneficial effects of herbs, among them www.greenmedinfo.com and www.naturalnews.com.
Yes there are many clinical research available on different plant based medicines. You can search on pubmed like anti inflammatory action of curcuma, Guduchi (Tinospora cordifolia)