Achike, F.I., et al. Nitric oxide, human diseases and the herbal products that affect the nitric oxide signaling pathway. Clinical and Experimental Pharmacology and Physiology, September 2003.
Researchers in Canada and Malaysia teamed up to research the stimulation of Nitric Oxide production by various herbal products. Nitric Oxide is believed a key factor in in controlling blood pressure because when released by the surface cells of blood vessels it causes the vessels to relax thus reducing blood pressure. the researchers found Jiaogulan to be one of the most effective herbs available in stimulating this reaction.