Xiao Xu Ming Tang
Do not self-treat with Xiao Xu Ming Tang
Practitioner-prepared only. It should only be used, if at all, under a trained prescriber who checks your heart and your other medicines.
If this is an emergency
Some reactions to Xiao Xu Ming Tang need urgent care. Call your local emergency number or go to an emergency department straight away — do not wait to see whether it passes.
Who should avoid Xiao Xu Ming Tang?
- Do not use if you are pregnant, trying to get pregnant, or breastfeeding — several herbs in this mix, including aconite and ephedra, can harm a baby or trigger early labour
- Do not use if you have any heart problem, including an uneven heartbeat, angina (chest pain from a narrowed heart artery) or heart failure
- Do not use if you have high blood pressure
- Do not use if you have had a stroke or a mini-stroke, unless a doctor who knows your case says it is safe
- Do not use if you take a heart rhythm drug such as digoxin, amiodarone or sotalol
- Do not use if you take an MAOI antidepressant such as phenelzine or tranylcypromine
- Do not use if you take any stimulant, including pseudoephedrine, caffeine pills or ADHD medicine
- Do not use if you take blood pressure medicine, water pills (diuretics) or steroid tablets
- Do not use if you take a blood thinner such as warfarin, apixaban or aspirin
- Do not use if you have kidney disease or only one working kidney
- Do not use if you have an overactive thyroid, glaucoma (raised pressure in the eye) or trouble passing urine from an enlarged prostate
- Do not use if you have low potassium (a mineral your heart needs) or are told your potassium runs low
- Do not use if you are giving it to a child, or if you are over 65 and have not had your heart checked
- Do not use if you have surgery booked within the next two weeks
- Do not use if you cannot read a full herb list on the label, since some products swap in a plant that scars the kidneys
- Do not use if you take any prescription medicine and no doctor or pharmacist has checked the mix for you
When should you see a doctor?
Get emergency help now if your lips, tongue or fingers go numb or tingly, if your heart races or skips, if you have chest pain, if you feel faint, or if you cannot stop vomiting. These can be signs of aconite poisoning or a heart rhythm problem, and both can turn deadly fast.
Call your doctor the same day if your blood pressure jumps, your ankles swell, you pass much less urine, or you feel very weak.
Call an ambulance for a sudden drooping face, a weak arm, or slurred speech. That is a stroke, and it needs a hospital, not herbs.
- What it is: An old Chinese multi-herb tea, used after a stroke, that holds two strong and risky herbs: ephedra and aconite.
- Active ingredients: Ephedrine from ma huang (ephedra), Aconite alkaloids from fu zi, Glycyrrhizin from gan cao (licorice), Ginsenosides from ren shen (ginseng), Cinnamon twig, peony, skullcap, chuan xiong and apricot kernel
- Side effects: Racing heart, high blood pressure, sweating and jitters are common; heart rhythm harm and aconite poisoning are the serious risks.
- Pregnancy & breastfeeding: Avoid in pregnancy and while breastfeeding.
Educational information, not medical advice — ask your doctor or midwife.
What is Xiao Xu Ming Tang?
Xiao Xu Ming Tang is an old Chinese herb formula. The name means "minor prolong life decoction". Healers gave it after a stroke, for weak or stiff limbs and a drooping face.
It is a mix of about ten herbs, boiled into a tea. Two of them act like strong drugs. Ma huang (ephedra) speeds up the heart, and fu zi (aconite) can upset the heart's rhythm.
Long use in China is not proof that a remedy works. The human trial evidence here is thin and weak, so read this page as background only. This is a multi-herb formula, so drug clashes and risks in pregnancy are real and are set out below.
How does Xiao Xu Ming Tang work?
In Chinese medicine, the old idea is that "wind" enters a weak body and stiffens one side. The formula is meant to push that wind out, warm the body and open the flow of blood.
That is a traditional idea, not a tested one. Modern lab work shows that some parts of the mix change blood vessel width and calm swelling in animal tissue.
No one has shown that these lab effects help a person recover after a stroke. Treat the way it works as unproven.
What forms does Xiao Xu Ming Tang come in?
The classic form is a decoction. You boil the raw herbs in water and drink the strained liquid.
You may also see it as granules that melt in hot water, as pills, or as a bottled liquid. Products vary a lot in strength and in which herbs they use.
In several countries, ephedra and aconite are banned or limited in over-the-counter products. Some sold blends leave them out, which makes the product a different thing from the classic formula.
Where it comes from:
The formula appears in Chinese medical books from around the 5th to 7th century. Sun Si-miao lists it in his Qian Jin Yao Fang.
For centuries it was a main choice for what Chinese doctors called "wind stroke". Later doctors argued about it, and many dropped the strong warming herbs.
Today it is still taught and still used in parts of China, mostly under close watch by a trained prescriber.
What does Xiao Xu Ming Tang help with?
- Weakness or stiffness on one side after a stroke: This is the main traditional use, and it has been for well over a thousand years. Small trials in China have tested it beside standard stroke care. They were mostly poorly run, so we cannot tell if the herbs helped. Stroke care needs a hospital, not a herb shop.
- Facial palsy (a drooping face from a weak nerve): Old texts list a drooping face as a target sign. We found no good human trials for this use. A sudden drooping face can mean a stroke, so treat it as an emergency and call for help.
- Numb or heavy limbs: Traditional writers used the formula when limbs felt numb, heavy or hard to move. There is no trial evidence for this on its own. New numbness needs a doctor first, since it can point to nerve or blood vessel trouble.
- Joint pain that feels worse in cold, damp weather: Some prescribers use it for cold, achy joints. This rests on tradition, not on trials. Safer and better tested options exist for joint pain.
What are the side effects of Xiao Xu Ming Tang?
- Fast or pounding heartbeat
- Uneven heartbeat
- Higher blood pressure
- Feeling jumpy or shaky, or not being able to sleep
- Heavy sweating
- Numb or tingling lips, tongue or fingers (an early sign of aconite poisoning)
- Nausea, vomiting or loose stools
- Headache or dizziness
- Swollen ankles, and low potassium from the licorice in the mix
- Rash, itching or other allergy signs
- Kidney damage, if the wrong plant is sold as fang ji
Good to know:
Mild effects are common. Many people feel warm, sweaty and wired.
The serious risks are not rare enough to ignore. Ephedra has been linked to stroke, heart attack and sudden death. Badly prepared aconite has killed people.
Stop the herbs and get help fast if your lips or tongue go numb, your heart races, or you feel faint. These are warning signs, not side effects to wait out.
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