There is a growing amount of evidence-based research supporting various botanicals; and/or primary evidence comes from a long medicinal use. Evidence-based research may be limited, but we shouldn't ignore botanicals that have been used for 1000s of years,
S. Corrao, D. Colomba, S. Arnone, C. Argano, T. Chiara, R. Scaglione, and G. Licata. Journal of the American Medical Informatics Association : JAMIA, 13 (5):
485-487(September 2006)LR: 20070419; PUBM: Print-Electronic; DEP: 20060623; JID: 9430800; CIN: J Am Med Inform Assoc. 2007 Mar-Apr;14(2):247-8. PMID: 17213490; 2006/06/23 aheadofprint; ppublish.