As a medicinal plant, lemon balm has traditionally been employed against bronchial inflammation, earache, fever, flatulence, headaches, high blood pressure, influenza, mood disorders, palpitations, toothache and vomiting. A tea made from Lemon balm leaves is said to soothe menstrual cramps and helps relieve PMS. The herb is used for nervous agitation, sleeping problems, functional gastrointestinal complaints, menstrual cramps and urinary spasms. It is thought that the volatile oils in lemon balm contain chemicals that relax muscles, particularly in the bladder, stomach, and uterus, thereby relieving cramps, gas, and nausea. internal use for tenseness, restlessness, irritability, and symptomatic treatment of digestive disorders.