What is Jade Screen Formula (Yu Ping Feng San)?

Jade Screen Formula (Yu Ping Feng San) is one of the most celebrated formulas in Traditional Chinese Medicine, first recorded in the Yuan Dynasty (around 1345 CE). Its name refers to a protective jade screen — a shield against wind and external pathogens — reflecting its role as a daily immune tonic for people whose defenses are easily breached. The formula combines just three herbs in a precise ratio: Astragalus as the primary immune-strengthening herb, White Atractylodes to support digestion and energy production, and Siler root to release and moderate the immune response.

How does Jade Screen Formula (Yu Ping Feng San) work?

Each herb plays a supporting role: Astragalus activates and regulates immune cells, helps the body produce more protective antibodies, and has adaptogenic properties that improve stress resilience. White Atractylodes strengthens the gut and supports the body's ability to absorb nutrients, which in Chinese medicine is seen as foundational to immune strength. Siler root acts as a moderator — it helps the body respond to threats without overreacting, which is why the formula is also useful for allergic conditions where the immune system is too reactive.

What forms does Jade Screen Formula (Yu Ping Feng San) come in?

Concentrated granules are the most convenient modern form and dissolve easily in warm water. Traditional decoction involves simmering the raw herbs and is considered by many practitioners to be the most potent delivery method. Capsules and tablets offer the easiest daily compliance but may vary in extract concentration — look for products standardized to the classical 6:2:1 herb ratio. Quality matters significantly: choose products from manufacturers that test for heavy metals and authenticate herb identity.

Where it comes from:

Recorded in the 'Danxi Xinfa' (Teachings of Danxi) during the Yuan Dynasty around 1345 CE, Yu Ping Feng San became a cornerstone of Chinese preventive medicine. It has been used continuously for nearly 700 years across China, Japan (as part of Kampo), Korea, and throughout Chinese diaspora communities worldwide. In modern China, it is one of the most commonly prescribed herbal formulas by integrative physicians and is included in Chinese national clinical guidelines for recurrent respiratory infections and allergic rhinitis.

What does Jade Screen Formula (Yu Ping Feng San) help with?

• Frequent colds and low immunity: This is the formula's core use — people who seem to catch every bug going around. The herbs work together to prime the immune system so it responds faster and more effectively when a pathogen arrives. Regular use over weeks builds a stronger immune baseline rather than just treating individual infections.
• Seasonal allergic rhinitis (hay fever): Jade Screen Formula has shown genuine promise for runny nose, sneezing, and nasal congestion from allergies. It appears to calm an overreactive immune response to harmless triggers like pollen, helping reduce both symptom severity and the frequency of allergy flares.
• Recurrent respiratory infections in children: Children who cycle through repeated colds, ear infections, or bronchitis are a traditional target for this formula. Clinical studies in pediatric populations in China have shown reductions in the number of infections per year and shorter illness duration when children take this formula preventively.
• Exercise-induced immune suppression: Intense training temporarily weakens immune function, leaving athletes more vulnerable to upper respiratory infections. Jade Screen Formula has been studied in athletes to help maintain immune markers during heavy training blocks, supporting recovery without interfering with performance.
• Chronic fatigue with low immune function: When ongoing tiredness comes with repeated infections and a sense that the body never fully recovers, this formula addresses both the energy and immune dimensions. Astragalus in particular has adaptogenic properties that support the body's ability to handle stress and rebuild vitality over time.
• Asthma (mild, allergic type): There is growing clinical interest in using Jade Screen Formula as a complementary approach for mild allergic asthma, particularly to reduce flare frequency. It works best as a preventive add-on rather than an acute rescue treatment, and should always be used alongside conventional asthma management.
• Post-illness immune recovery: After a prolonged illness, surgery, or intensive medical treatment, the immune system can remain sluggish. This formula is traditionally used in the recovery phase to rebuild immune strength and reduce the risk of secondary infections while the body heals.
• Excessive sweating (spontaneous sweating): In Traditional Chinese Medicine, spontaneous sweating during the day — unrelated to heat or exercise — is seen as a sign of weak defensive energy. Jade Screen Formula is a classical remedy for this pattern, and the clinical rationale aligns with its ability to support the body's regulatory systems.

What can Jade Screen Formula (Yu Ping Feng San) help prevent?

• Recurrent upper respiratory tract infections: multiple clinical trials show reduced infection frequency with regular preventive use
• Seasonal allergy flares: evidence supports reduced symptom burden and flare frequency in allergic rhinitis when used preventively before allergy season

Which foods are rich in Jade Screen Formula (Yu Ping Feng San)?

1. Astragalus root tea or soup (Huang Qi): Astragalus root is the primary herb in this formula and can be simmered in broths or teas at home — a traditional way to get a mild version of the formula's main immune-supportive ingredient daily.
2. Mushrooms (Shiitake, Maitake, Reishi): Medicinal mushrooms contain beta-glucan polysaccharides that activate immune cells similarly to how Astragalus works — a natural dietary way to support the same immune-strengthening pathway.
3. Garlic: Allicin and other sulfur compounds in garlic have well-documented immune-enhancing and antimicrobial properties that complement the formula's protective function against respiratory infections.
4. Ginger: Warming and anti-inflammatory, ginger supports respiratory health and immune resilience — a natural pairing with this formula's goals and widely used alongside it in Chinese dietary therapy.
5. Cooked root vegetables (sweet potato, yam, turnip): In Chinese dietary medicine, cooked root vegetables nourish the digestive system (Spleen Qi), which this formula also targets via White Atractylodes — supporting the gut-immune axis through food.

What are the side effects of Jade Screen Formula (Yu Ping Feng San)?

• Mild digestive upset or bloating (uncommon, usually resolves with food)
• Loose stools in those with sensitive digestion (rare)
• Not recommended during active fever or acute infections: may be inappropriate timing
• Caution during pregnancy: consult a qualified practitioner before use
• Rare allergic reaction in individuals sensitive to plants in the Apiaceae family (Siler root)

Good to know:

Jade Screen Formula has a very long safety record across centuries of use and modern clinical trials. It is considered safe for most adults and children when taken at standard doses. The most important timing rule: do not take it during an active infection with fever, as it is a tonic formula meant for prevention and recovery — not acute illness management.

How much Jade Screen Formula (Yu Ping Feng San) should you take?

• Recommended daily: Granules/powder: 3–6 grams per day of concentrated extract granules, typically in 2 divided doses. Raw herb decoction: 9–18 g Astragalus, 6–9 g White Atractylodes, 3–6 g Siler root, simmered and taken as tea. Capsules/tablets: follow product labeling, typically 2–4 capsules twice daily. Pediatric dosing should be weight-adjusted — consult a practitioner.
• Best time of day: Traditionally taken in the morning and afternoon — not at night, as the formula is considered energizing and warming. With morning and midday meals is the most common protocol.
• With or without food: Take with meals or immediately after to minimize any digestive sensitivity and improve absorption.
• Time to effect: Immune strengthening and cold prevention: 4–8 weeks of consistent daily use. Allergic rhinitis symptom relief: 2–4 weeks. Best results come from sustained use through an entire allergy or cold season.
• How long to take it: Preventive use: take continuously through cold and flu season (typically 3–6 months), then rest for 4–8 weeks before resuming if needed. For chronic immune weakness, some practitioners recommend year-round use with periodic breaks. Do not take during active acute illness with fever — pause the formula and resume once illness has resolved.