**6. Conclusion**

Development of drug is a multistep process that deals with multiple concepts and domains. It requires a holistic knowledge of all related areas to identify a potential drug to provide an expected result. The drug begins its action from administration to excretion from the body. The prediction of drug's action in human body/cell is essential to develop a potent drug with no toxic effects. This can be accomplished by the already developed/developing computational approaches with the insight of the PD associated concepts like parameters to consider, and the relative effect and response of the drug.

This opens up the door of personalized medicines in the form of digital therapeutics, enable the physician to prescribe medication on the basis of patients' requirement. But it is still important to test and mining evidences in order to evaluate its efficacy and safety.

This chapter helped us to realize that the computational approaches discussed in this chapter are providing such good outcomes when combining them with one another. Even though, PD has attained a remarkable place in the drug discovery and marketing, an effective product (drug) can be obtain by unifying the PK/PD properties of a drug. In other words, as a whole pharmacology of a drug should be taken into concern in order to design a patient-friendly drug/medicine.
