A penny is the unit of measurement of Chinese medicine, the conversion relationship is not the same over the generations, the current common penny is equal to 3 grams. Ancient Chinese medicine units of measurement are catty, two, money, minutes, centimeters and so on. One money is equivalent to 3 grams in modern times. Such as fine Xin but money, is a special limit under specific conditions, that is, the general dosage of fine Xin does not exceed 3g, more than 3g need to be signed by the responsible physician before use. In addition to toxicity, diarrhea, qi, blood, essence of pharmaceuticals and some valuable drugs, the general Chinese medicine commonly used internal dose of 5 to 10 g, part of the texture of heavy and non-toxic minerals, shells, shells, fossils commonly used for 15-30 g, fresh plant and animal drugs commonly used for 30-60 g. If the dosage is too small, it will not be therapeutic and will cause delay in treatment; if the dosage is too large, it will kill and maim the vital energy, which may also cause adverse effects or unnecessary waste. Meanwhile, Chinese herbal medicines are often used in compound prescriptions, in which changes in the dosage of the main drugs can affect the efficacy of the entire prescription and the main treatment of the disease. If you need to take medication, it is recommended that you use it under the guidance of a professional physician, rather than blindly taking medication on your own.