Drug is substance used as a medicine.
ln this way substance which has been well
composed and clinically been tested in the
laboratory and has been satisfy for human
use or consumption as medicine.Therefore
drug has to be legally certified before
it is allowed to be used.When a man use
a drug or depend on a drug he has no
control such a condition is called
addiction.In condition where a man used
a drug and experience rash due to sensi-
tivity to the drug is known as eruption.
General reaction to a drug may include
fever,malaise,joint pain,rashes,jaundice,
and confusion.
