Herbal & Flower Teas
Yu Ping Feng San (Jade Screen Powder) — Home Decoction or Ready-Made Granules
traditionally associated with strengthening immune defences, reducing susceptibility to colds and flu, and stopping excessive sweating in constitutionally weak individuals
In short: Yu Ping Feng San (Jade Screen Powder) — Home Decoction or Ready-Made Granules is a herbal & flower tea that traditionally associated with strengthening immune defences, reducing susceptibility to colds and flu, and stopping excessive sweating in constitutionally weak individuals. It is most often made for respiratory & lung wellness, energy & vitality, immune support. Total time about 25 min. Key ingredients: astragalus root, white atractylodes rhizome.
Why people make this formula
The name translates literally as “Jade Screen Powder,” an image that captures its purpose well: like an invisible screen standing between the body and the outside world, this three-herb formula is designed to shore up the body’s outer defences (wei qi in Chinese medicine terms), making it harder for wind, cold, and pathogens to penetrate. It is particularly valued for children and adults who seem to catch every illness that passes through the room, and for those who sweat easily even without exertion. Ready-made granules are available from Chinese herb shops and are convenient to keep on hand; the three raw herbs can also be decocted simply at home.
What studies say about the key ingredients
Traditional use is not the same as clinical proof. Here is the strongest human research we found for each ingredient, limitations included.
- Astragalus root
TA-65 was associated with longer leukocyte telomeres compared with controls, but the meta-analysis found no significant improvement in frailty measures or inflammatory markers (CRP/IL-6). Mild gastrointestinal effects were reported.Limitation: Industry-funded trials reported larger effects than others, and the compound is a purified extract at doses not comparable to eating Astragalus root.PubMed 41286474 · 3 more astragalus root studies - Chrysanthemum
Compared with the high-fat meal alone, the extract group had lower postprandial glucose at 1 hour and higher antioxidant markers (T-AOC, SOD, GSH), with lower MDA. Incremental area under the curve did not differ significantly between groups.Limitation: Small sample of healthy young adults given a single high-fat meal, so longer-term effects and effects in people with metabolic conditions are unknown.PubMed 36677639 · 1 more chrysanthemum study
From the Nourilo Research Library. Findings come from specific doses, extracts and populations and may not apply to a home-cooked recipe.
Safety first — read before you cook
This is a traditional food, not a treatment. Please check with your doctor or pharmacist before making it a regular part of your diet if you:
- are pregnant or breastfeeding, or are cooking for a young child;
- take regular medicines — especially blood thinners, blood-pressure, diabetes or immune-suppressing drugs;
- have a kidney, liver or heart condition, or a known food allergy.
Ingredient notes for this recipe
- Astragalus: May interact with medicines that suppress the immune system. A thorough safety evaluation has not been done, and little is known about its safety in pregnancy or breastfeeding. Source: NIH NCCIH — Astragalus
Stop eating it and seek advice if you notice an allergic reaction or feel unwell. Safety notes reviewed 8 October 2026 · How we write safety notes
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