R&D spending of pharmaceutical companies is often taken into consideration to understand the potential of future pipeline development. The animation provides you with an overview of the evolution of R&D investments for the 10 biggest pharmaceutical companies over the last 20 years. The level of investment in R&D should always be considered taking into account the size of the company and the revenue. For this reason we also recommend you to read the Top 10 Pharma Companies for revenue 1997 – 2017. Furthermore for a detailed analysis of revenue and R&D investments in the most recent year we recommend you refer to Top 10 Pharmaceutical Companies 2017.