What is Shinpito?
Shinpito is a Kampo herbal mix that contains mao, also called ephedra. Ephedra holds ephedrine, a strong stimulant. It can push blood pressure up fast and strain the heart.
Reported harms from ephedrine include stroke and chest pain. Others are fast or odd heart rhythms and psychosis (a loss of touch with reality).
The mix also holds kanzo, or licorice. Licorice can lower your potassium (a key body salt). Low potassium makes heart rhythm problems worse.
In Japan, Shinpito is a drug, not a health food. A doctor must order it, and a pharmacist hands it out. It is sold there as Tsumura 85.
In the United States, the FDA bans ephedra alkaloid supplements. Ephedrine is also a watched chemical there, on the DEA List I.
Kampo doctors used this mix for tight, wheezy breathing. Old use is not proof that a herb works or that it is safe. This page gives no dose and no way to make it.
How does Shinpito work?
Ephedrine acts much like your own stress hormones. It opens the airways and makes the heart beat harder and faster. This effect is well known in people, not just in lab work.
The same action drives the harm. Blood vessels tighten and blood pressure climbs. A heart that is already sick can slip into a fast or odd rhythm.
Ephedrine also acts on the brain. It can cause fear, shaking, sleep loss and, in rare cases, psychosis (a loss of touch with reality).
Licorice adds a second problem. It makes the body hold salt and water and lose potassium. This is well shown in people, and low potassium can trigger a dangerous heart rhythm.
The two risks stack. A racing heart plus low potassium is worse than either one alone.
Other herbs in the mix are milder. Most of the danger sits with mao and kanzo.
What forms does Shinpito come in?
In Japan, Shinpito comes as a dry extract granule in sealed packets. This is a prescription item, handed out by a pharmacy. It is numbered 85 in the Tsumura range.
Some makers also supply it as a tablet or fine powder for medical use.
Online sellers offer ephedra formulas as loose herb mixes or capsules. These sit outside any medical check. In the United States, ephedra alkaloid supplements are banned.
This page does not describe how any form is made or taken. Herb quality, alkaloid strength and packet size differ between products, and you cannot judge that at home.
Where it comes from:
Shinpito comes from Kampo, the Japanese branch of Chinese herbal medicine. Its name is often read as Mysterious, or Miraculous, Decoction. That name reflects old praise, not proof.
The recipe is recorded in Japanese formula books and is treated as a Japanese empirical mix. Its parts trace back to older Chinese ephedra formulas for wheeze and cough.
Kampo doctors gave it to people with tight breathing that seemed worse under stress or worry. Children with wheeze were a common group.
Japan later brought many Kampo mixes into the national health system. Shinpito is one of them, which is why a doctor prescribes it there.
Its long standing in Kampo says that doctors trusted it. It does not say that it is gentle.
If this is an emergency
Some reactions to Shinpito 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 Shinpito?
- Never buy or take this formula without a doctor; it is a prescription drug in Japan and its key herb is banned in United States supplements
- Do not use if you have heart disease, angina (chest pain from the heart) or a past heart attack
- Do not use if you have high blood pressure
- Do not use if you have an odd or fast heartbeat, or a pacemaker
- Do not use if you have had a stroke or a mini-stroke
- Do not use if you have an overactive thyroid (hyperthyroidism)
- Do not use if you have glaucoma (a raised-pressure eye disease)
- Do not use if you have trouble passing urine or an enlarged prostate
- Do not use if you have low potassium (a low level of a key body salt)
- Do not use if you have kidney disease or liver disease
- Do not use if you have diabetes
- Do not use if you take an MAOI antidepressant (an older class of mood drug)
- Do not use if you take thyroid hormone, ADHD stimulants or decongestants
- Do not use if you take water pills (diuretics), digoxin or steroid tablets
- Do not use if you take any other herbal mix with mao (ephedra) or kanzo (licorice)
- Do not use if you are pregnant or breastfeeding
- Do not give it to a child except under a doctor's direct care
- Avoid it if you are over 65, as heart and prostate risks rise with age
- Avoid it before surgery, and tell your anaesthetist if you have taken it
When should you see a doctor?
Call emergency services now if you have chest pain or chest pressure, a racing or pounding heart, or a heartbeat that skips. Do the same for sudden bad headache, blurred vision, weakness on one side of the body, drooping face, slurred speech, fainting, a fit, or severe breathlessness.
Get urgent care for muscle weakness or cramps with a very fast heart, as these can mean low potassium. Get urgent care too for fear, confusion, or hearing or seeing things that are not there.
See a doctor soon if you get swollen ankles, rising blood pressure, yellow skin or eyes, or a new cough with fever and breathlessness. Take the packet with you so staff can see what you took.
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