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PREVENTION TEA (Yu Ping Feng San 玉屏风散) is a traditional Chinese herbal formula that has been used for centuries to strengthen the immune system and prevent respiratory infections.

It is commonly used to treat conditions such as recurrent respiratory infections, allergies, and chronic fatigue. Today, Yu Ping Feng San is still widely used in traditional Chinese medicine.

  • support immune function (especially during cold & flu season) (1, 2)
  • prevent recurrent respiratory infections (1)
  • seasonal allergies (3, 4, 5)

Huáng Qí 黃芪 Astragalus membranaceus (Astragalus)
Bai Zhu 白煮 Attractylodes macrocephela 
Fang Feng 防風  Saposhnikovia divaricata



The formula was first recorded in the Song dynasty (960-1279) in the book "Imperial Grace Formulary of the Tai Ping Era" (太平惠民和剂局方) and discussed in many other herbal texts over the past 1,000 years.  It is recommended for supporting the body's immune system and preventing colds and flu.


1. Poon PM, Wong CK, Fung KP, et al. Immunomodulatory effects of a traditional Chinese medicine with potential antiviral activity: a self-control study. Am J Chin Med. 2006;34(1):13-21. doi:10.1142/S0192415X0600359X

2. Du CY, Zheng KY, Bi CW, Dong TT, Lin H, Tsim KW. Yu Ping Feng San, an Ancient Chinese Herbal Decoction, Induces Gene Expression of Anti-viral Proteins and Inhibits Neuraminidase Activity. Phytother Res. 2015;29(5):656-661. doi:10.1002/ptr.5290
3. Luo Q, Zhang CS, Yang L, et al. Potential effectiveness of Chinese herbal medicine Yu ping feng san for adult allergic rhinitis: a systematic review and meta-analysis of randomized controlled trials. BMC Complement Altern Med. 2017;17(1):485. Published 2017 Nov 6. doi:10.1186/s12906-017-1988-5

4. Matkovic Z, Zivkovic V, Korica M, Plavec D, Pecanic S, Tudoric N. Efficacy and safety of Astragalus membranaceus in the treatment of patients with seasonal allergic rhinitis. Phytother Res. 2010;24(2):175-181. doi:10.1002/ptr.2877

5. Chan RY, Chien WT. The effects of two Chinese herbal medicinal formulae vs. placebo controls for treatment of allergic rhinitis: a randomised controlled trial. Trials. 2014;15:261. Published 2014 Jul 2. doi:10.1186/1745-6215-15-261


 * These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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