A 25-question “Nationwide Kampo Web Test” was conducted to evaluate the basic knowledge and diagnostic ability of Kampo among medical professionals nationwide. We analyzed the scores of all 608 examinees (241 doctors, 257 pharmacists, 77 others, 12 acupuncturists, 10 nurses, and 11 dentists) and evaluated the test quality. The performance of all examinees was 67.7 ± 16.9 points (mean score ± standard deviation). Among the doctors, the mean score of Kampo medicine specialists (83.8 ± 8.7 points) was significantly higher than that of non-specialists (65.3 ± 16.3 points) (p<0.0001). The performance of doctors who prescribed 20 or more Kampo medicines (78.4 ± 11.5 points) was significantly higher than that of other doctors (p<0.0001). Among the 25 questions, the difficulty levels of 13, 8, and 4 were easy, moderate, and hard (correct answer rates: 70% or more, 40-70%, and less than 40%), respectively. The ability of 13 questions (52%) to distinguish between good and poor performers was extremely high (discrimination index of 0.5 or higher). Collectively, these results supported the good performance of our test, suggesting that it is a highly practical learning achievement evaluation system that could utilize information and communication technology and is expected to be used in future lifelong learning in the field of Kampo medicine.

We analyzed dispensing receipt data in the medical treatment in October 2019 using the Receipt Information/Specific Medical Examination Information National Database (NDB), extracted the cases of multiple combinations of Kampo prescriptions, and analyzed their frequencies. Of the 536,524 receipts, 44,731 (8.3%) included Kampo and non-Kampo crude drug preparations. Of the receipts that included Kampo and non-Kampo crude drug preparations, 38,032 receipts (7.1%) included single Kampo or non-Kampo crude drug preparation. There were 6,699 receipts (1.2%) that included multiple Kampo and non-Kampo crude drug preparations. There were 187 receipts for the decoctions containing multiple rude drugs without Kampo preparations, and the ratio was 0.035% of all receipts and 0.42% of the receipts containing Kampo and non-Kampo crude drug preparations. There was one receipt containing eight Kampo preparations, three receipts containing seven Kampo preparations, and a total of 84 receipts containing five or more Kampo preparations. Although it is unclear how many multiple Kampo preparations were prescribed at the same time, this investigation indicates the actual duplication of multiple Kampo preparations.

The Medical Safety Committee has conducted various activities for patient safety in Japanese traditional Kampo medicines. In this study, we conducted a questionnaire survey to promote the prevention of medical accidents and their recurrence. We received responses from 15 of 19 facilities specializing in Kampo medicine and collected a total of 247 incident and accident cases in the field of Kampo medicine. Cases of side effects included interstitial pneumonia caused by Kampo prescriptions containing Scutellariae Radix, aconite poisoning, and licorice-induced pseudoaldosteronism. Furthermore, we also collected decoction-specific cases, which are unique to facilities specializing in Kampo medicine, for the first time. From the results, we included the following seven points for risk management in the field of Kampo medicine : 1) insufficient recognition to the side effects of Kampo medicines, 2) misunderstanding of the dosages of Kampo products, 3) errors due to similarities in Kampo formulas and crude drug names, 4) preconception of frequently used Kampo prescriptions, 5) contamination in the decoctions, 6) errors related to crude drug items and their dosages that are frequently added or subtracted, 7) errors in hospital wards.

Although it is not yet common, certified Kampo (traditional Japanese medicine) doctors and acupuncturists are cooperating with each other to provide traditional medical treatment for patients in some general hospitals in Japan. In other hospitals, however, Kampo and acupuncture-moxibustion have not been introduced, and doctors only treat patients using modern Western medicine. Many doctors must already be aware that modern Western medicine is not the only approach for the treatment of patients, but they do not make any efforts to improve the situation by adopting traditional medicine. Here, we give some examples of hospitals in which acupuncture treatments are routinely provided, having a favorable effect on both patients as well as the hospitals themselves. We believe that these examples give us a good opportunity to consider the future of an ideal medical system in which modern Western medicine and traditional Japanese medicine are successfully integrated.

Although the descriptions of shigyakukachotanto in “Waitaimiyaofang” and tsumyakushigyakukachotanjuto in “Songban Shanghanlun” are quite similar to each other, the specifications of the dosages of crude drugs and the water volume in the books were considerably different. Focused on the specified water volume to decoct these formulas, each reasonable decocting period was estimated, then the decoctions were prepared using hard water that was common in mainland China. The dosages of aconite root were 2­-fold different between these two formulas, but the contents of aconitine-­type diester alkaloids (ADA) in both decoctions were found in the range of 1.2—1.4­-fold. It was suggested that in order to control the efficacy and the safety of aconite, the decocting period was well regulated by the specification of water volume for decocting at this ancient era. Moreover, the dosages of aconite root and glycyrrhiza in bukuryoshigyakuto (BSGT) formula of “Songban Shanghanlun” are equal to those of shigyakuto (SGT) but the specified water volume to begin decocting is as about twice as that of SGT. When prepared using hard water, BSGT resulted to make the contents of ADA lower and those of non-­ester alkaloids higher compared with those of SGT decoction. It was suggested the spe­cific water volume for each formula prescribed in classical Chinese medicine had considerable significance to determine the dosages of chemical ingredients in the decoctions especially in the circumstances using hard water to prepare them.

The Medical Safety Committee analyzed the case reports of minor incidents from the pharmacies last time as part of an activity to promote patient safety in Japanese traditional Kampo medicine. This time, we analyzed the case reports of medical accidents and minor incidents from the medical institutions. We extracted 626 reports related to Kampo products from the public database, which the Japan Council for Quality Health Care has established based on the collected information related to the medical accidents and minor incidents. The medical accident information includes case reports related to drug-induced liver injury. The minor incident reports include prescribing error due to misinterpretation related to the quantity of one sachet of Kampo extract product, dispensing error due to similarity of product appearance, number or name, and administration error due to judging the medicine only by Kanji characters or product company names without checking the Kampo formula name. Additionally, the minor incidents were often discovered by people belonging to different professions or patients themselves. In order to promote patient safety, knowledge about these incidents should be shared among the people involved in the same or different professions.

We collected and analyzed the case reports of minor incidents in the preparation of Kampo products in Japanese pharmacies in order to manage the medical safety control in Japanese traditional Kampo medicine. We extracted 2,166 reports that are related to Kampo products from the database of minor incidents in pharmacies supplied from The Japan Council for Quality Health Care from 2009 to 2019. Among the reports, we found the cases that pharmacists could find the mistakes about the name, dosage and administration of Kampo products or could prevent the appearance of adverse reaction when pharmacists check the prescription and ask prescription question for doctors. It is suggested that the system of separation of dispensing and prescribing functions would be well working in medical safety control. At the same time, we also found many cases that pharmacists have actually made mistakes by confusing the name of Kampo products and dosage. In this report, we summarized the cases of these minor incidents and frequently appearing confusions about the names of Kampo products.

The Japan society of oriental medicine created a committee of medical safety in 2017. The first activity was to summarize the representative side effects of Kampo medicine and to enlighten members of our society about them. In this report, we documented the knowledge to keep in mind at present on pseudoaldosteronism, drug-induced liver injury, and drug-induced lung injury. Since these three major side effects may cause clinically severe conditions, it is very important to detect them early and take appropriate measures. Therefore, proper examinations at the right time are necessary while taking Kampo medicine.

We investigated the decocting time to prepare the formulas containing unprocessed aconite root, such as shigyakuto, tsumyaku shigyakuto, and kankyobushito, which had been registered in “Shanghanlun” edited in Song Dynasty, using the weights and measures in Houhan Dynasty when the original “Shanghanlun” was regarded to have been established. Also the contents of aconitine-type diester alkaloids (ADA) eluted from unprocessed aconite root in the decoction were analyzed in time-dependent manners. As regards the modified formula for the “physically strong patients” in the texts of tsumyakushigyakuto in “Shanghanlun”, adding dried ginger was found to lead the decocting time to be shorter and the sum of ADA content in the decoction of the modified formula to increase about 20%. It was also found that the compositions of diterpene alkaloids derived from aconite root in kankyobushito decoction were highly different from those in shigyakuto decoction, containing less ADA and more aconine and hypaconine, due to the high pH of the decoction, which was the consequence of lacking glycyrrhiza in kankyobushito formula. It is suggested that the doctors in the era of “Shanghanlun” establishment may have carefully adjusted the contents of ADA in the decoctions using unprocessed aconite root by choosing co-decocted crude drugs.

We evaluated body constituents patterns of 74 consecutive patients with neurological degenerative disorders. They comprise Parkinson's disease (n = 38), amyotrophic lateral sclerosis (n = 19), and multiple system atro­phy (n = 17). We compared body constituents patterns between them and 149 consecutive patients with other neurological diseases of the same age. We used ki-ketsu-sui scores to evaluate body constituents patterns in all cases. Ki-ketsu-sui scores measure six factors : qi deficiency (kikyo), qi stagnation (kiutsu), qi counterflow (kigyaku), blood deficiency (kekkyo), blood stasis (oketsu), and fluid retention (suitai). As a result of multi­variate analysis, neurological degenerative disorders had large weight of blood deficiency, fluid retention and qi stagnation. Their adjusted odds ratios (95% confidence interval) were 3.02 (1.43-­6.48), 2.37 (1.13-­5.11), 2.33 (1.01-­5.44), respectively. Most relevant factor to neurological degenerative disorders was a blood defi­ciency. Taking into consideration a prescription of “shimotsuto rui” may contribute to alleviate patient's suf­fering. In addition to subjective symptoms, we need an oriental medicine scale such as pulse, tongue, and ab­dominal examinations to judge a therapeutic effect of Kampo medicine.