Pharmaceutical analysis may be defined as a procedure or the sequences of progressions to identify or quantify a constituent or drug, the mechanisms of a pharmaceutical solution or fusion or the determination of the structures of chemical combinations used in the formulation of pharmaceutical product. Review articles are the summary of current state of understanding on a particular research topic. They analyze or discuss research previously published by scientist and academicians rather than reporting novel research results. Review article comes in the form of systematic reviews and literature reviews and are a form of secondary literature. Systematic reviews determine an objective list of criteria, and find all previously published original research papers that meet the criteria. They then compare the results presented in these papers.