There are many reasons for carrying out research An evaluation may be carried out to prove scientifically the traditional experience on the safety and efficacy of herbal medicines It may also be conducted to validate a new-found plant material or a new combination of herbal medicines, or even a new indication, a new dosage form or a new administrative route for an existing herbal medicine. Purified or semi-purified compounds derived from herbal medicine may also be presented for research

The requirement of evidence as to the safety and efficacy of herbal medicines and the method of research chosen should be adjusted to the original purpose of the research.