Educational information, not medical advice — ask your doctor or midwife.
Nichimotsukokato is a Japanese Kampo herbal formula. Kampo is Japan's own herbal system, built on old Chinese texts. It is normally taken as a dried plant extract in granule form.
The name is also written Nimotsu-koka-to. Under that spelling it is a small formula of astragalus root and uncaria hook. Our records do not fix its exact make-up, so read the maker's label.
It belongs to the list of Kampo products covered by Japan's health insurance, overseen by the health ministry (MHLW). It is used there mainly for blood pressure complaints in older adults.
The honest verdict: there is no good human trial evidence that it works. Long use in a tradition is not proof of effect, and it is not proof of safety either.
Nobody has shown how this formula works in people. What follows comes from lab and animal work on its likely herbs.
In animal studies, uncaria hook can relax blood vessels and lower blood pressure. Its alkaloids, such as rhynchophylline, seem to act on calcium movement in cells. Whether that happens at Kampo doses in humans is not established.
In cell and animal studies, astragalus appears to act on immune cells and on the lining of blood vessels. That is a long way from a proven effect on your blood pressure.
Kampo itself uses a different logic. A practitioner matches the formula to your whole pattern: build, energy, tongue and pulse. That model has not been tested the way a drug claim is tested.
Most people meet it as a fine granule or powder, sold in sachets.
Common forms:
- Extract granules, the standard insurance-covered form in Japan. - Fine powder or tablets from some makers. - Raw dried herbs, boiled into a tea by a practitioner.
Outside Japan it is hard to find. Imported granules and online "Kampo" powders are not always checked for identity or purity.
The formula belongs to modern Kampo practice rather than to the ancient classics. Japanese doctors of the 20th century built small formulas for older patients with raised blood pressure.
Traditional writing described it for elderly people with stiff shoulders, head pressure and numb hands or feet. Practitioners prescribed it after a pattern exam, not for a lab reading.
It was later listed among the Kampo extracts that Japan's health insurance covers. That listing reflects regulatory history and long use, not a strong trial record.
Stop taking it and speak to a doctor if you notice:
- Swelling in the face, hands or ankles, or fast weight gain. - Muscle weakness, cramps or an unusual thirst. - Yellow skin or eyes, dark urine, or ongoing nausea. - A rash, hives or itching that spreads. - Blood pressure readings that climb rather than settle.
Get emergency help for chest pain, a racing or irregular heartbeat (arrhythmia), sudden breathlessness, fainting, or weakness on one side of the body.
In Japan it is a prescription Kampo extract listed by the health ministry (MHLW) and paid for by national health insurance. In the United States, the UK, the EU and Australia it is not an approved medicine. Imported granules sold as supplements there are not checked the same way.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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