In East India and Sri Lanka, where it is called "fever tea," lemon grass leaves are combined with other herbs to treat fevers, irregular menstruation, diarrhea, and stomachaches. Lemon grass is one of the most popular herbs in Brazil and the Caribbean for nervous and digestive problems. The Chinese use lemon grass in a similar fashion, to treat headaches, stomachaches, colds, and rheumatic pains.

The essential oil is used straight in India to treat ringworm or in a paste with buttermilk to rub on ringworm and bruises. Studies show it does destroy many types of bacteria and fungi and is a deodorant. It may reduce blood pressure - a traditional Cuban use of the herb - and it contains five different constituents that inhibit blood coagulation