Is there any harm in taking oyster powder?

Oyster powder generally refers to the use of oysters ground and made of oysters, usually follow the doctor’s instructions to regulate the use of, and will not cause significant harm to the human body; however, if not the right or a large number of use, it may cause gastric discomfort, or even aggravate the original symptoms, in addition, this drug more than a long time to take, easy to cause constipation and dyspepsia.
Oyster, salty, astringent and slightly cold in nature, has the efficacy of re-calming the mind (stabilizing the mind with medicines such as ores), submerging yang and replenishing yin, and softening and dispersing the knots (softening and dispersing the hard lumps). It is used for palpitations and insomnia, dizziness, scrofula (mainly refers to tuberculosis of the lymph nodes in the neck), phlegm nuclei (lumps swollen up like nuclei under the skin), obstruction in the abdomen (lumps in women’s lower abdomen), plaques (lumps), etc. It is also used to treat the symptoms of insomnia and dizziness, as well as the symptoms of scrofula.
Since oyster is slightly cold in nature, overuse may easily cause stomach discomfort, stomach pain, stomach cold, diarrhea, abdominal pain and other symptoms; and if it is used by people who do not belong to the above indications, it may aggravate their original symptoms, such as people with cold spleen and stomach (mainly manifested as coldness, edema, lack of warmth of limbs, diarrhea, abdominal pain and so on) may aggravate their original symptoms after taking the medicine.
Before using the drug to clarify their own symptoms, it is recommended to go to a regular Chinese medicine hospital for diagnosis, and then under the guidance of the doctor reasonable, standardized medication, do not take blindly.