Drug maintaining plays an irreplaceable role in our health. Once our bodies are subject to the intrusion of the disease, such as colds, diarrhea, fever, etc., small physical discomfort, as large as the major disorders of the body, must use drugs to be adjusted or treatment in order to restore health. Therefore, health is inseparable from the drugs, we can not live without drugs.
It is based on man-made objects of use, prevention, treatment, diagnosis of human diseases. Purposive regulation of human physiological functions, the provisions of the applicable cases, usage and dosage requirements; use: In addition to appearance, the patient can not recognize their intrinsic quality, and many drugs under the guidance of a doctor, rather than selected by the patient decision. At the same time, the use of drugs, quantity, time and other factors largely determine the effects of its use, misuse not only can not "cure", may also be pathogenic, and even life-threatening safety. Therefore, medicine is a special commodity.