Drugs

Drug, the substance that affects the function of living cells, used in medicine to diagnose, cure, perven the occurence of diseases and disorders, and prolon gth elife of patients with incurable conditions.
Since 1900 the availability of new and more effective drugs has increaded the average American's life span by 15 years. Drugs also have contributed to the eradication of diseases.
Drugs can be classified in many way, how they are dispensed, by the subtance they are derived, or by thier form.drugs can also be ...