Do I have to ask a doctor for a prescription when I go to the hospital to buy medicine? Can't you buy it without opening it?
Drugs are generally divided into prescription drugs and over-the-counter drugs. Non-prescription drugs can be bought in pharmacies without a doctor's prescription, but prescription drugs need a prescription, because prescription drugs are mostly antibiotics and other drugs, which are set for safety, because drug allergy is a very dangerous thing. If you go to the hospital to buy medicine, you usually need a doctor's prescription to buy it, whether it is prescription medicine or over-the-counter medicine.