Although there are some errors in the identification of the medicines by analogy due to the low level of the study at that time, every single Japanese name of the medicines used before the early Heian period is recorded, and the origins and histories of them are revealed, and plenty of so-called itsubun (lost writings), which previously existed but do not exist now even in its home country, China, are included in the dictionary.
当時の学問水準より比定の誤りなどが見られるが、平安初期以前の薬物の和名をことごとく記載しておりかつ来歴も明らかで、本拠地である中国にも無いいわゆる逸文が大量に含まれている。