Sedative of plant origin. Has a pronounced sedative (calming), moderate cardiotonic (slows the rhythm and increases the force of heart contractions) effect, moderate hypotensive effect.

Shui Xian is one of the signature Oolong teas from Wu Yi Mountain in Fujian Province, China. Meaning "water spirit" in Chinese, Shui Xian tastes balanced, rich, clean, with a lingering sweetness with light hints of river moss.