Ethnobotanicals means herbs that are used by the natives for long time to treat differnet health issues. However some time there is no scientific justification available.
Lack of scientific validation of efficacy of herbs is the recent past....in the wake of AGP ban in poultry and zinc oxide ban in swine and increasing customer demand for antibiotic-free chicken has made researchers / nutritionists getting attracted to herbal solutions....now there are lot of scientific literature and evidence available and/or emerging on scientific validation of herbal products...please find enclosed some articles for your reference...