Drugs

Drug |I | |INTRODUCTION | Drug, substance that affects the function of liveliness cells, use in medicine to diagnose, cure, prevent the occurrence of diseases and disorders, and widen the disembodied spirit of patients with incurable conditions. Since 1900 the availability of new and more than effective medicines such(prenominal) as antibiotics, which fight bacterial infections, and vaccines, which prevent diseases caused by bacteria and viruses, has increased the average Americans emotional state twosome from about 60 years to about 75 years. Drugs strike vastly improved the quality of life. Today, medicines have contributed to the eradication of in one case widespread and sometimes lethal diseases such as infantile paralysis and smallpox. |II | | miscellanea | Drugs can be classified in many meanss: by the way they ar administerover the counter or by prescription; by the substance from which they are derivedplant, mineral, or animal; by the systema skeletale they takecapsule, liquid, or gas; and by the way they are administeredby mouth, injection, inhalation, or direct practise to the skin (absorption). Drugs are also classified by their observes.

any medicates have third names: a chemical name, which describes the contain structure of the dose; a generic or branded name, which is the official medical checkup name assigned by the United States Adopted put forward Council (a group sedate of pharmacists and other scientists); and a filth or trade name given by the particular manufacturer that sells the drug. If a community holds the patent on a drugthat is, if the com pany has the easy lay right to make and sel! l a drug, then the drug is available under one brand name only. afterwards the patent expires, typically after 17 years in the United States, other companies can also manufacture the drug and market it under the generic name, or give it a new brand name. Another way to categorize drugs is by the way they act against diseases or disorders: chemotherapeutic drugs attack specialised organisms that cause a disease...If you want to possess a to the full essay, order it on our website: OrderEssay.net

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