Quality assurance and quality control together play an important role in assuring the quality, safety and efficacy of a pharmaceutical product. Implementation of effective quality assurance policies is a key for the success of a product. Quality cannot be maintained by merely testing but needs to be built into the product. Since 21st century, there has been a growing awareness regarding quality of pharmaceutical products. As a result, pharmaceutical industries have adopted principles of total quality management, current good manufacturing practices and various harmonized guidelines and practices.