Hai Zao is also known as Sea Weed. The bitter, salty and cold herb has been used in TCM as diaretic agent and to treat goiter, cough, asthma, haemorrhoids, runny nose, discomfort in digestive tract, pain in hernia, etc., as it clears Heat, eliminates Phlegm, disperses nodules, etc., by enhancing the functions of kidney, liver, …