Jurisprudence (ju·ris·pru·dence,ˌjo͝orəˈspro͞odns/) is noun having meaning the theory or philosophy of law.

• a legal system
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this branch deals with legal system,Pharmaceutical jurisprudence  is vital branch of pharmacy profession which deals with law related pharmacy profession.

Here we nee to understand the need of laws in any profession.most of us consider law as constraint which limits our freedom but this is not the real case.this can be understand with simple example of traffic signals.It is nearly impossible to any big city road devoid for traffic signals,when we come across these traffic signals we stay till the light s red and go when it is green.this ensures that there is not any chaos, no accidents,and no monopoly of one particulate lane ,everybody get equal time and without grudging traffic moves smoothly.Same analogy we have to apply to laws these laws ensures that society be in harmony check any untoward circumstances,minimizes crimes,regulates profession etc. 

                                                    Pharmacy profession such wast profession,besides it is concern with life of peoples(patients),it should be regulated and harmonized.In India medicine is available since ancient times Ayurveda and homemade remedy is widely used,and still equally popular. Allopathy ,Homepathy,Naturopathy and some other alternative method of medicine are available.This is really a big market and therefore good chance of proliferation of some unscrupulous elements is natural,hence indian government enacted laws related to pharmacy profession which ensures the medicines reaching to patients are safe,potential,authenticate,and reasonable.there is not only act which control all this but it is govern by number of laws which are interconnected to each other. Some of them are

1.Legislation to regulate then profession of Pharmacy. The Pharmacy act 1948.

2.Legislation to regulate import, manufacture, distribution & sales of drugs & cosmetics. The Drugs and Cosmetics Act 1940 & rules 1945 & amendments

3.The Drugs Price Control Order 1998 and  latest amendments.