Drug Price Trends
Which prescription drugs are getting more expensive, and which are getting cheaper? See year-over-year spending changes across Medicare Part D.
Biggest Price Increases
Drugs with the largest year-over-year price increases
Biggest Price Decreases
Drugs with the largest year-over-year price decreases
Top 5 Price Increases
See full list →Top 5 Price Decreases
See full list →Frequently Asked Questions
Pricing pressure, utilization growth, reformulations that extend patent life, and lack of generic competition all drive year-over-year cost increases. Specialty drugs without biosimilars tend to see the steepest rises.
The primary driver of drug price decreases is generic or biosimilar competition. When a patent expires and multiple manufacturers enter the market, prices typically drop 80-95% within 1-3 years.
Trend data reflects year-over-year changes in Medicare Part D spending. The dataset refreshes annually when CMS publishes the latest year of claims data.
Year-over-year change is the percentage change in total Medicare Part D spending on a drug between the two most recent data years.