Lavender (known as Xun Yi Cao) is a very special herbal flower which has calming effects that helps relieve stress, fatigue, headaches, migraines and insomnia. It is also used to calm nerves and promote restful sleep. Also said to remove flatulence and help with abdominal discomfort. Pregnant women should avoid it. Also, those suffering stomach diseases and susceptible people are not advised to drink it.