Three in one Chelonian shell, so unyielding on the outside, is a great repository of medicinal substances within. Combined with pilose antlers, it is found in the "four treasure" and "turtle and deer double-immortal" jellies which are widely sold and commonly prescribed to treat osteoporosis.
三效合一？看來堅硬的龜板，裡層含豐富動物膠質，龜板與鹿茸、各式植物藥合熬的「龜鹿二仙膠」、「四珍膠」，民間到處有售，是中醫師最常推薦給骨質疏鬆症病患使用的藥方。