We know about pharmacy and Pharmacognosy means what? Pharmacognosy means knowledge of drugs. It is the Study of structural components, chemical component of the drug and its usage. These are prepared from natural sources and this is a strategy from the ancient drug collection. These drugs are prepared from plants, animals, minerals and vegetables. They diagnosis the drugs dependant on the demand and the effect of the drug, they examine the results. The effect of the drug is more. This is a modernize pharmacy but extracted from ancient scholars. These drugs have got more demand now days. These drugs have no side effects. These drugs prevent the diseases and heal them completely. Career in this field is more in demand and to have complete knowledge and to become a medical practitioner. One has to take the course in this.