Plaster, also called ointment, is named after its dosage form, which belongs to one of the eight major dosage forms of traditional Chinese medicine: pill, powder, ointment, Dan, wine, dew, soup and ingot. Plaster is generally composed of about 20 kinds of Chinese medicines, which has a good nourishing effect.

According to the theory of traditional Chinese medicine, winter is the best season for tonic all the year round, and cream is the best in winter. There are two kinds of ointment: external use and internal use. External ointment is a commonly used pharmaceutical dosage form in external treatment of traditional Chinese medicine, which is not only used for skin, sores and other diseases, but also used in internal medicine and gynecology.

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The meaning of paste is wider: if it refers to things, oil is paste; If it refers to the form, it is called a condensed but not solid paste; If you mean taste, take sweet ginger as paste. Shan Hai Jing once said, "Good words are delicious and smooth as cream". If it refers to the content, it refers to the essence of things. If it refers to the function, it will be nourished and moistened.

There are two kinds of ointment: external use and internal use. External ointment is a commonly used pharmaceutical dosage form in external treatment of traditional Chinese medicine, which is not only used for skin, sores and other diseases, but also used in internal medicine and gynecology.