Pharmaceutics is the branch of pharmacy that manages the process of turning new drug in to safe and effective prescription. It is also called as the branch of dosage form design. This deals with the adulteration of drug in to dosage form.

Novel drug delivery systems is the new system Recent advances in the understanding of pharmacokinetic & pharmacodynamic behavior of drug have offer a more rational approach to the development of optimal drug delivery system. The advantages of novel drug delivery systems over conventional system are as follows:

• Optimum therapeutic- drug concentration in the blood or in tissue may be maintained over a prolonged period of time.
• Pre- determined release rates of extended period of time may be achieved.
• Duration for short half- life drug may be increased.
• By targeting the site of action, side effects may be eliminated.
• Frequent dosing and wastage of the drug may be reduced or excluded. 
• Better patient compliance may be ensured.