✵The TCM herbalism is also known as pharmaceutics of Traditional Chinese Medicine, or Chinese pharmaceutics, is the branch of health science dealing with the preparation, dispensing, and proper utilization of Chinese herbs. It is majorly composed of Introduction of Chinese Medicinals, Classification of Chinese Herbs, Formulas, and Patent medicines.
Classifications of Herbs:Astringents and Hemostatics Herbs.
Introduction: Astringents and Hemostatics Herbs: also known as discharge-arresting herbs, an agent or substance that arrests discharges such as sweat, diarrhea, urine, blood, leukorrhea and semen.
✵Till the date March 19th, 2020, there are Totally  kinds of common TCM herbs,  kinds of related plant species,  kinds of related animals species,  kinds of related minerals,  kind of related inorganic substance, are recorded in this category. These Astringents and Hemostatics Herbs. are briefly introduced separately:
Concha Ostreae Usta(Calcined Oyster Shell).
Brief Introduction: The Herb Concha Ostreae Usta is the calcined shell of oyster, Ostrea gigas Thunb., Ostrea talienwhanensis Crosse or Ostrea rivularis Gould(family Ostreidae), used as an astringent and antacid for the treatment of excessive sweating, seminal emission, leukorrhagia and acid regurgitation. The herb is commonly known as Concha Ostreae Usta, Calcined Oyster Shell, Duàn Mǔ Lì.
✵Common official herbal classics and other famous herbal classics defined the herb Concha Arcae Usta(Calcined Arc Shell) as the calcined shell of the animal species (1). Ostrea gigas Thunberg., or (2). Ostrea talienwhanensis Crosse., or (3).Ostrea rivularis Gould.,(4).Ostrea denselamellosa Lischke.They are introduced in the entry "Concha Ostreae(Oyster Shell)".