Nuo Dao Gen Xu
Quick Facts
- What it is: The dried root and root hairs of sticky rice, boiled into a mild tea in Chinese medicine.
- Main uses: Night sweats, Sweating a lot in the day, Dry mouth and thirst, A low fever that lingers
- Best for: Night sweats, as a gentle helper in a formula
- Active ingredients: No active part identified, Starch and simple sugars, Plant sterols, Silica and trace minerals
- Forms: Loose dried root for tea, Cut and sifted bags, Part of mixed herb granules or pills
- Time to effect: Unknown; traditional use suggests a few days to two weeks.
- Side effects: Rare and mild; belly fullness or loose stools, and a rash in people allergic to rice.
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What is Nuo Dao Gen Xu?
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.
How does Nuo Dao Gen Xu work?
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.
What forms does Nuo Dao Gen Xu come in?
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.
Where it comes from:
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.
Who should avoid Nuo Dao Gen Xu?
- Do not use if you are allergic to rice or to any rice product.
- Do not use if you have night sweats along with weight loss, coughing up blood, or lumps in your neck or armpit — see a doctor first.
- Do not use if you have a fever that has lasted more than three days, or one no one has explained yet.
- Do not use if you are pregnant or breastfeeding, unless your doctor says it is fine, because it has not been tested in pregnancy.
- Do not use if you take medicine for diabetes without telling your doctor, since the tea adds starch and sugar.
- Do not use if you are being treated for TB (tuberculosis, a lung infection) or cancer, unless your care team agrees.
- Do not use if you want to give it to a child under 12 without a doctor's advice.
- Do not use if you are using it in place of a medicine your doctor has prescribed.
When should you see a doctor?
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.
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