A drug is a chemical (drug), the active ingredient or set of them, as part of a pharmaceutical form designed for use in humans or animals, endowed with properties to prevent, diagnose, treat, alleviate or cure diseases, symptoms or disease states.
The active ingredient is the component responsible for drug activity, and is reaching the target site, ie where you have to do their share. The same drug may contain one or more active.
A carrier is that stuff that is added to the active substances or their associations to serve as a vehicle, enabling the preparation and stability, modify its organoleptic properties or to determine the chemical properties of the drug and its bioavailability.
Generics are drugs sold under the name of the active ingredient incorporated. Equality of dose, dosage form, efficacy, safety, quality and bioequivalence as the original.
A patent is a set of exclusive rights granted by a State to an inventor or his assignee, for a limited period of time in exchange for the disclosure of his invention. The patents are for an indefinite period but will expire after a specified period is usually twenty years.
Manuel Elkin Patarroyo (Colombia, 1946) is a PhD immunologist at Rockefeller University in New York. Responsible for developing a synthetic vaccine against malaria. This vaccine has already been tested in areas that suffer from this disease as an epidemic (Colombia, Venezuela, Ecuador, Brazil and more recently in several African countries). The patent was donated to the WHO in 1993 and has improved in recent years vaccine for this disease that kills three million people every year.
In addition, Patarroyo intends to create a consortium of "friends" to distribute free new drug when it is ready for use, probably in about five years. So you can reach the largest possible number of people at risk of malaria and the scientific estimates some 2700 million people. He collaborates with the World Health Organization for the development of synthetic vaccines against malaria, tuberculosis and leprosy.