What is the most expensive medication in the US? Exploring the World of Million-Dollar Treatments
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4 min read
As of 2025, the most expensive medication in the U.S. is Lenmeldy, a gene therapy priced at $4.25 million per dose [1.2.7]. This article answers **what is the most expensive medication in the US?** and explores the groundbreaking science and complex economics behind these costly treatments.