Medication is a medicine or a chemical compound used to treat or cure illness. According to Encyclopædia Britannica, medication is "a substance used in treating a disease or relieving 展开

One of the key classifications is between traditional small molecule drugs; usually derived from chemical synthesis and biological medical products; which include recombinant proteins, vaccines, blood products used therapeutically (such as IVIG), 展开

A single drug may contain single or multiple active ingredients.
The administration is the process by which a patient takes medicine. There are three major categories of drug administration: enteral (via the human gastrointestinal tract), 展开

Drug development is the process of bringing a new drug to the market once a lead compound has been identified through the process of drug discovery. It includes pre-clinical research (microorganisms/animals) and clinical trials (on … 展开

Drug use among elderly Americans has been studied; in a group of 2,377 people with an average age of 71 surveyed between 2005 and 2006, 84% took at least one prescription drug, 44% took at least one over-the-counter (OTC) drug, and 52% took at least one 展开

For the digestive system
• Lower digestive tract: laxatives, antispasmodics, antidiarrhoeals, bile acid sequestrants, 展开

In the fields of medicine, biotechnology, and pharmacology, drug discovery is the process by which new drugs are discovered.
Historically, drugs were discovered by identifying the active ingredient from traditional remedies or by 展开