Drugs are chemicals or substances that change the way our bodies work. Some are medicines that help people when doctors prescribe them. However there have been a lot of cases with drugs abuse. When one is ill, doctors prescribe pharmaceutical drug, also called a medication or medicine, is a chemical substance used to treat, cure, prevent, or diagnose a disease or to promote well. Pharmaceutical drugs are helpful in curing one’s health when one is not well under doctor’s prescription and supervision. In other cases, there have been the use of illegal drugs that can damage the brain, heart, and other important organs. One popular example can be cocaine. Cocaine is a drug that can cause heart attack, it is extremely addictive. When one uses drug, one does very not perform well in schools or in any work affair. One of the oldest drugs is known as opium. This is a drug known for relieving pain its use for surgical analgesia has been recorded for several centuries. However it has been misused and abused by people. In today’s world, there are hundreds of drugs that has been discovered ad used.