[Analysis and consideration based on first classical prescriptions].

Classical prescriptions are precious wealth left by ancient Chinese medical scientists. Moreover,they are also the important part of the treasure-house in Chinese medicine. Classical prescriptions have a long and rich history for human-use in China and play an important role in keeping people healthy. The state administration of traditional medicine of China published the Catalogue of Classical Prescriptions(first batch) in 2018. This measure has inspired the enthusiasm of Chinese medicine manufacturers to study ancient classical prescriptions and develop classical compound prescriptions. Based on the first batch of classical prescriptions, the dosage forms, sources, prescription components, decocting degree, use of toxic drugs and processing methods of classical prescriptions. The results showed that most of the classical prescriptions in the first batch were decoction and boiled powder,while only four of them were powder and paste forms,all of which were originated from representative classics in the past dynasties. The dosage and decocting degree of decoction were greater than those of boiled powder. The dosage and decocting degree of decoction in Han and Tang Dynasties was close to that in Ming and Qing Dynasties,higher than that in Song and Jin Dynasties. Moreover,the average number of herbs in the prescriptions in Han Dynasty was the smallest. The use of toxic traditional Chinese medicine was the most frequent in Han Dynasty, and Pinellia ternata was the most common toxic medicine. There were various processing methods, including cleansing, cutting, stir-frying, roasting and so on. In this paper, the dosage forms of traditional paste, the time concept of decoction in the ancient times, the traditional roasting method and the processing method of toxic drugs were summarized to provide ideas and reference for further development of classical prescriptions.