In the previous post, we discussed how Medicare Part D spending increased by 48% from 2019 to 2023. We noticed that a small number of drugs accounted for a large share of total expenditures. This leads us to wonder which drugs are the primary leaders of the spending growth. Were all of these drugs consistent over the five years?

In this blog post, we will explore the drugs that made it onto the top ten list over the years and how their growth changed with time.

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