5 Most Expensive Drugs in the World

4. Zolgensma

Cost: $2.25 million

Company: Novartis

Zolgensma is a single-dose treatment designed to address the genetic origin of spinal muscular atrophy. It works by replacing the function of the absent or malfunctioning SMN1 gene, stopping the advancement of SMA. This gene therapy is specifically used for the treatment of SMA in children under the age of 2.