Branding has a huge role in the commercial success of pharmaceutical drugs, and is just as important as what is in the drug itself. Even if the ingredients in two different drugs are identical one will always predominate in terms of sales because of its branding and marketing. Although people from the 1500s have always been advertising their products, the Marketing and Branding sector is a relatively new field. The implications branding has on products is extensive, especially on pharmaceutical drugs. The field of work this topic covers is advertising, sales, branding, and pharmacy. Throughout this paper I will explore evidence of branding in the pharmaceutical industry and how that affects the sales of drugs. Primary and secondary sources with experiments will provide me with information that is supported by numbers. In addition, I will be looking into sources for large corporations and understanding how they formulate their brands and why they create new drugs under one brand, a concept known as umbrella branding. After researching and analyzing the examples of how branding leads to success of drugs, I will then look into why this is the case. Some possible implications include the placebo effect and choice theory. Psychology and economics are subjects which can explain why we behave the way we do.