Yu Ping Feng San
Quick Facts
- What it is: A classic Chinese herbal formula of three herbs, sold as one product and used to try to cut down how often you catch colds.
- Main uses: Catching colds and coughs often, Hay fever and nasal allergy, Sweating too easily
- Best for: Adults who catch cold after cold through the winter, People using it alongside, not instead of, normal care
- Active ingredients: Astragalus root (huang qi), White atractylodes root (bai zhu), Siler root (fang feng)
- Forms: Granules, Pills, Capsules, Raw herbs boiled into a tea
- Time to effect: Weeks to months, not days.
- Side effects: Usually mild: upset stomach, bloating, dry mouth. Rarely, an allergy rash.
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What is Yu Ping Feng San?
Yu Ping Feng San is a Chinese herbal formula. It is also known as Jade Windscreen Powder. It is sold as a single drug (one product), even though it blends three herbs.
People take it to try to catch fewer coughs and colds. It is also used for hay fever and for sweating that comes on too easily. In Chinese medicine it is said to shield a weak "surface" of the body, like a screen in front of a door.
The evidence is weak. Most human trials are small, come from China, and were not run well. Long use in a tradition is not proof that a remedy works, and that holds here.
How does Yu Ping Feng San work?
No one has shown how this formula works in people. What follows is an idea, not a proven fact.
In Chinese medicine, the three herbs are said to work as a team. Astragalus is said to build up the body's guard. White atractylodes is said to dry damp and steady the gut, and siler root is said to push out "wind" from the surface.
In lab dishes and in animals, parts of astragalus can nudge immune cells (the cells that fight germs). Some animal work also points to fewer signals that drive allergy swelling. Lab and animal results often do not carry over to people, so treat this as a lead and nothing more.
What forms does Yu Ping Feng San come in?
The usual modern form is a granule (a dried powder you stir into hot water). Pills and capsules are also sold. Both are easy to carry and simple to dose.
A herbalist may instead write a raw herb mix for you to boil into a tea. This is called a decoction. It tastes strong and sweet-earthy, and takes 30 to 40 minutes to make.
Buy from a firm that tests each batch. Some imported herb products have been found to hold lead or other heavy metals, or added drugs. A brand that shows test results is worth the extra cost.
Where it comes from:
The formula is old and well known. It is usually traced to Chinese texts of the Yuan and Ming eras, roughly the 1300s to 1400s.
It has stayed in constant use since then. It sits in modern Chinese hospital manuals and in the Chinese Pharmacopoeia, and is one of the most used "tonic" formulas for people who fall ill often.
Who should avoid Yu Ping Feng San?
- Do not use if you have had an organ transplant. This formula may work against the drugs that stop your body rejecting the organ.
- Do not use if you take a drug that damps down your immune system, such as ciclosporin, tacrolimus, mycophenolate or a biologic drug.
- Do not use if you take steroid tablets or methotrexate for an autoimmune illness (where the immune system attacks your own body), unless the doctor who prescribed them agrees.
- Do not use if you have lupus, rheumatoid arthritis, multiple sclerosis or another autoimmune illness, unless a doctor who knows your case says it is safe.
- Do not use if you are having chemotherapy or other cancer treatment, unless your cancer team says yes.
- Do not use if you have a fever, chills or an infection right now. In Chinese medicine this formula is for building up between illnesses, not for treating one in full flow.
- Do not use if you are pregnant or breastfeeding. It has not been tested well enough in pregnancy to call it safe.
- Do not give it to a child unless a doctor or trained herbalist has checked the child first.
- Do not use if you are allergic to astragalus, atractylodes or siler root, or to plants in the pea or daisy families.
- Do not swap it for an inhaler, an antihistamine (an anti-allergy drug) or any medicine your doctor has prescribed.
When should you see a doctor?
Stop taking it and see a doctor if you get a rash, itching, swelling of the face or lips, or trouble breathing. Get urgent help for breathing trouble.
Also see a doctor if you feel sick, your skin or eyes turn yellow, or your urine turns dark. These can be signs of liver trouble from a bad-quality herb product.
Book an appointment if colds keep coming back after 8 weeks on it, if you sweat heavily for no clear reason, if you lose weight without trying, or if a cough lasts more than three weeks. Tell every doctor and pharmacist that you take this formula, especially before surgery.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
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