Educational information, not medical advice — ask your doctor or midwife.
Zacate limón is a tall grass with a strong lemon smell. Its leaves are steeped fresh or dried to make the drink known as té de limón. The plant is Cymbopogon citratus, the same lemongrass used in cooking.
In Latin American homes it is an everyday tea. People sip it after a heavy meal, for a sour stomach, for a cold, or to settle the nerves at night. It is cheap, easy to grow, and sold in most markets.
Here is the honest verdict. Human proof for these uses is thin, and most research sits in lab dishes and animals. Long use in a tradition is not proof that something works, and it is not proof that it is safe.
No one has shown how the tea works in people. The ideas below come from lab and animal work.
Citral is the main oil in the leaf. In test tubes it slows the growth of some bacteria and yeasts. Whether that happens inside the body is not known.
In animal studies, lemongrass extracts relaxed gut muscle and eased spasm. That is the usual reason given for the after-meal cup. It has not been tested well in people.
Some rodent work points to a mild calming effect from the plant and its oil. In cell studies, parts of the leaf lower markers of swelling (inflammation). Neither finding proves that a cup of tea eases pain or worry.
The drink itself may do some of the work. Warm fluid, a slow pause, and a familiar smell can settle a stomach on their own.
Most people meet it as a tea.
- Fresh stalks and leaves, cut and steeped in hot water. - Dried loose leaf, sold by weight in markets. - Tea bags, often blended with mint, chamomile or anise.
- Essential oil, for scent and for diluted use on skin. It is not for swallowing. - Capsules and liquid extracts, sold as supplements.
- Hydrosol or floral water, used as a body spray. - Fresh stalks as a kitchen herb in soups and stews.
The tea and the cooking herb are mild. The oil, capsules and strong extracts are far more concentrated, and the safety advice for them is not the same.
Lemongrass is native to South and Southeast Asia. It moved with trade and took root across the Caribbean and Latin America. By the 1800s it was growing in home gardens and courtyards there.
Healers and grandmothers served té de limón for an upset stomach, gas, colds, fever and nerves. In Mexico it sat beside manzanilla and hierbabuena in the after-meal tea shelf. In Brazil the same grass is drunk as capim-limão, in Cuba as caña santa.
It was also used as a kitchen herb and a scent for floor wash and soap. These records show what people reached for and how they used it.
Stop and get urgent help if you have swelling of the lips or throat, hives, or trouble breathing. Those are signs of a serious allergy.
Go to an emergency room if anyone swallows the essential oil. Take the bottle with you.
See your doctor soon if you notice yellow skin or eyes, dark urine, belly pain, or very dark stools. Also see a doctor if a fever lasts more than three days, if belly pain keeps coming back, or if you feel dizzy and faint after drinking the tea.
In the United States, lemongrass is allowed as a food and flavouring. It is sold as an ordinary herbal tea and supplement in the United States, Mexico and the European Union. It is not approved as a medicine anywhere.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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