The 20 Most Expensive Prescription Drugs in America

The 20 Most Expensive Prescription Drugs in America

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20. Tecfidera

Typical cost of 30-day supply: $10,400*
Treats: Multiple sclerosis

Competition from generics and growing concerns about its safety have slowed sales of this drug, the flagship product of pharmaceutical firm Biogen. Even so, revenues from the drug reportedly grew 10 percent last year due to price increases.

*Data from GoodRx.

Biogen