Drogas

Drugs

A drug, in other words, is any substance that, when absorbed into the body of a living organism, alters normal bodily function. There is no single, precise definition, as there aredifferent meanings in drug control law, government regulations, medicine, and colloquial usage.
In pharmacology, a drug is a chemical substance used in the treatment, cure, prevention, or diagnosis ofdisease or used to otherwise enhance physical or mental well-being. Drugs may be prescribed for a limited duration, or on a regular basis for chronic disorders.
Recreational drugs are chemicalsubstances that affect the central nervous system, such as hallucinogens. They may be used for perceived beneficial effects on perception, consciousness, personality, and behavior. Some drugs can causeaddiction and habituation.[
Drugs are usually distinguished from endogenous biochemical’s by being introduced from outside the organism. For example, insulin is a hormone that is synthesized in thebody; it is called a hormone when it is synthesized by the pancreas inside the body, but if it is introduced into the body from outside, it is called a drug.
Many natural substances such as beers,wines, and some mushrooms, blur the line between food and drugs, as when ingested they affect the functioning of both mind and body.
A medication or medicine is a drug taken to cure or ameliorateany symptoms of an illness or medical condition, or may be used as preventive medicine that has future benefits but does not treat any existing or preexisting diseases or symptoms.
Dispensing ofmedication is often regulated by governments into three categories over the counter medications, which are available in pharmacies and supermarkets without special restrictions, behind the counter ,which are dispensed by a pharmacist without needing a doctor's prescription, and prescription only medicines , which must be prescribed by a licensed medical professional, usually a physician.