Lemongrass tea will help keep the cholesterol levels healthy. The manganese present in lemongrass tea performs a crucial role in controlling the body’s cholesterol. Ayurvedic benefits of lemongrass Tea. Lemongrass tea can deal with poor digestion of food, stomach aches, gas, bowel spasms, as well as diarrhea. It is stated to become a mild sedative and may calm nerves. Since it includes vitamin A, it may be useful in keeping the eyes as well as skin healthy.