Price comparison of the 10 most expensive drugs as of 2017

The data shows the cost of the top ten most expensive drugs worldwide as of 2017. According to the data, orphan drugs for rare diseases make up the top ten most costly drugs worldwide in 2017. The number one most expensive drug was Ravicti or glycerol phenylbutyrate with a list price of over 793 thousand USD per year. Ravicti is used in the long-term treatment of urea cycle disorders.