Q. How do I decoct Kampo medicine if I do it myself?

A. Our clinic generally prescribes decocted medicine for a two-week supply. After taking the raw herbs home, first quickly rinse them with water, then put all of them into a large pot and bring to a strong boil. Once it boils, reduce to medium-low heat and simmer for approximately 30 minutes to 1 hour (decoction time varies depending on the raw herb, so please confirm with your Kampo doctor).

Once it has cooled down sufficiently, separate the decocted medicine (liquid) from the dregs, and store the medicine in the refrigerator (if the amount of medicine at this point is less than a two-week supply, add water to the dregs again, make a second decoction, and mix it with the first decoction).

Decocted medicine can be decocted multiple times. Although the effectiveness will decrease, it is possible to save the dregs after separating the medicine and make a second or third decoction.