Dragon bone and oyster are two medicines that are often used in combination with each other. Both drugs have the effects of tranquilizing the mind and calming fright, calming the liver and subduing yang (suppressing the rising yang qi in the liver), and astringent and solidifying astringency, while oyster has the effect of softening and dispersing knots (softening and dispersing hard lumps).
Dragon bone is the fossilized skeleton of ancient large mammals such as elephants, deer, cattle and horses, etc., while oyster is the shell of long oyster of the family Ostreaceae, and the two medicines are used together very frequently in clinics. Dragon bone and oyster have similar effects, both of which are capable of calming and tranquilizing the mind, calming the liver and submerging the yang, and constricting and fixing astringency.
Both of them can be used to treat insomnia caused by palpitation, dizziness caused by hyperactivity of liver yang, spermatorrhea, urination, spontaneous sweating (involuntary sweating during the daytime, aggravated by sweating with a little movement), and other diseases caused by slippage.
Oyster is different from dragon bone in that oyster also has the function of softening and dispersing knots, which can be used to treat the accumulation of gall tumors (equivalent to thyroid tumors) caused by phlegm-fire stagnation, scrofula (mainly refers to tuberculosis of cervical lymph nodes), phlegm nuclei (subcutaneous swellings such as nuclei of the nodules) and other diseases.
Dragon bone and oyster need to be used under the guidance of a professional physician, the adverse reactions and contraindications of the two drugs are not clear.