http://www.ncbi.nlm.nih.gov/en...t&list_uids=11498727

http://www.ncbi.nlm.nih.gov/en...t&list_uids=12093601


This herb has received a good bit of attention over the past few years, and the research trials usually show promising results with no indications of toxicity at recommended dosage. Contraindications re: medications should be explored.