Increase in number of doses decreases patient compliance and increases cost of the therapy. To decrease burden we have to innovate new methods to increase patient compliance and decrease cost. Bi-layer tablets are ideal for this purpose, easy to manufacture, easy to handle and easy to swallow. Method of analysis is the most crucial part, we have to focus on techniques that are easy to handle, cheap and require less expertise. To achieve these goals, a new method was developed for analysis of these tablets. Most crucial part of any dosage form is its release pattern and post delivery pattern and other analytical techniques which aid in the analysis of drug and are much important for the fabrication of dosage form. All these methods are well focused in this book.