Educational information, not medical advice — ask your doctor or midwife.
Luo Han Guo is the dried fruit of a vine that grows in southern China. It is also called Momordica Fruit, or monk fruit. It is a single drug (TCM herb), which means it is used on its own and not as part of a fixed blend.
People drink it as a sweet tea for a dry cough, a dry or sore throat, and hard, dry stools. The fruit tastes very sweet but holds almost no sugar and few calories. For that reason it is also sold as a sweetener for drinks and food.
Here is the short verdict. Luo Han Guo has a long record of use in Chinese medicine, but human trials on the herb itself are few and small. A long history of use is not proof that something works, and we say that here once rather than in every section.
The sweet taste comes from mogrosides. These are sweet compounds in the fruit that are far sweeter than sugar, but the body takes in very little of them.
In Chinese medicine the fruit is seen as sweet and cool. It is said to cool heat in the lungs, moisten a dry throat and soften dry stools. This is a traditional way of describing the body, not a lab finding.
Lab and animal studies suggest the fruit may calm swelling and mop up some cell damage. What that means for a person drinking the tea is still unclear.
You can buy it in several forms: - Whole dried fruit, broken open and simmered or steeped to make tea - Cut and sifted pieces or slices for tea - Powdered fruit extract, sold as a sweetener - Liquid drops and syrups for drinks - Sachets and cough teas that blend it with other herbs Sweetener products are often mixed with erythritol (a sugar alcohol used for bulk), so check the label.
The fruit has been grown in Guangxi in southern China for hundreds of years. Local records tie its name to monks who farmed it, which is where the name monk fruit comes from.
It entered Chinese herbal practice for dry cough, hoarse voice and dry stools. It is a well known staple of that one tradition rather than a herb shared across many. In modern times it has spread worldwide mainly as a sugar substitute.
See a doctor if a cough lasts more than three weeks, or if you cough up blood or thick coloured phlegm. Get help the same day for fever, chest pain, shortness of breath or unplanned weight loss.
Also see a doctor if constipation lasts more than two weeks, or if you notice blood in your stool or strong belly pain. Get emergency care if you get a rash, swollen lips or face, or trouble breathing after taking it, as this can be a severe allergic reaction.
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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