1. Ministerial Notification No. 65 (2011) The Japanese pharmacopoeia, 16th edn. Ministry of Health, Labour and Welfare, Tokyo, pp 1684–1685
2. Oguri K (2014) Ryukotsu no kasekishigenhozen to katsuyou no kyousei (Medicinal use with conserving resources of longgu). Seibutsu-kogaku Kaishi 92:350–353 (in Japanese)
3. Tsuda T, Sugaya A, Kaneko E, Ohguchi H, Katoh K, Jin W, Sugaya E (1998) Pharmacological studies on longgu and oyster shell. Nat Med 52:300–309 (in Japanese)
4. Ha JH, Lee MG, Chang SM, Lee JT (2006) In vivo characterization of sedative activities of Fossilia Mastodii Ossis. Biol Pham Bull 29:1414–1417
5. MinoY Tanaka K, Usami H, Ota N (1988) Inorganic chemical approaches to pharmacognosy. III. X-ray fluorescence spectrometric studies on the inorganic constituents of crude drugs (2) on the mineral drugs “Ryukotsu”. Shoyakugaku Zasshi 42:310–316 (in Japanese)