Educational information, not medical advice — ask your doctor or midwife.
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Nuo Dao Gen Xu is the root and fine root hairs of sticky rice. The roots are dug up, washed, dried, and boiled into a mild tea. It is a food-like herb, not a strong drug.
In Chinese medicine it is used most often for night sweats. That means sweating a lot while you sleep. It is also used for thirst and for a low fever that hangs on after an illness.
The evidence grade here is insufficient. We could not find any human trial of this root. Long use in a tradition is not proof that a herb works, and that gap is worth knowing before you start.
No one has shown how it works in the body. There is no proven pathway.
Old Chinese texts say the root "holds in" sweat and cools a mild, slow fever. In that model, night sweats come from a lack of body fluid and a small amount of trapped heat. The root is said to feed the fluid back and calm the heat.
That is a traditional idea, not a lab finding. Modern studies have not tested it.
The most common form is loose dried root hairs, sold by weight for tea. You boil them in water for 20 to 30 minutes and drink the liquid.
Some shops sell cut and sifted bags of the same thing. You may also find it inside mixed Chinese herb formulas, as pills or granules.
It is rarely sold on its own as a capsule in the West. There is no standard extract.
Rice has been grown in China for thousands of years, and the root was treated as a cheap, gentle leftover. Chinese herb books from the last few hundred years list it for sweating and thirst.
It sits in the minor, supporting group of herbs. It is usually added to a formula rather than used alone, and it has never been a headline remedy.
See a doctor if your night sweats come with weight loss, a cough, swollen glands, or feeling very tired.
See a doctor if a fever lasts more than three days, or goes above 39C (102F).
Stop and get help straight away if your lips, tongue, or throat swell, if you come out in hives, or if you find it hard to breathe.
Also book a visit if your sweating has not eased after two weeks on the tea.
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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