Prescription drugs are drugs that can only be obtained through a physician’s prescription, and there are more types including various antihypertensive drugs, hypoglycemic drugs, antibiotics, psychotropic drugs, and so on, which need to be used under the guidance of a physician. According to China’s Food and Drug Administration, drugs can be divided into prescription drugs and over-the-counter drugs, prescription drugs are drugs that can only be purchased according to a prescription issued by a doctor. Such drugs have certain side effects, toxicity, patients are difficult to control themselves according to the instructions, need to be used under the guidance of a physician. Prescription drugs include many, such as nifedipine, olmesartan and other antihypertensive drugs; metformin, gliclazide and other hypoglycemic drugs; levofloxacin, ceftazidime and other antibiotics; rifampicin and other anti-tuberculosis drugs; mirtazapine, zolpidem and other psychotropic drugs. The concept of over-the-counter drugs, as opposed to prescription drugs, refers to drugs that can be purchased on their own without a doctor’s prescription, such as ibuprofen and loratadine. These drugs are safer, have rich clinical experience in use, and have fewer adverse reactions, so patients can use them according to the instructions. If there is any discomfort during the use of the drug, the drug should be stopped immediately and medical attention should be sought at a regular medical institution.