Skip to main content

Oregon State Flag An official website of the State of Oregon »

Oregon’s top 25 most expensive and most prescribed drugs

August 20, 2019

Salem — The Oregon Division of Financial Regulation has released the lists of Oregon’s most expensive and most prescribed drugs, as well as the prescription drugs that cause the greatest increase to health insurance plan spending.

Brand-name drugs such as Humira and Enbrel, prescriptions commonly prescribed for rheumatoid arthritis, topped the lists of most expensive and greatest increase to plan spending. Hydrocodone-Acetaminophen, a pain reliever, was the most prescribed, along with several generic drugs treating conditions such as high blood pressure and cholesterol.

“These lists highlight the goal of the drug price transparency program,” said Andrew Stolfi, insurance commissioner. “They provide a first step to transparency for Oregonians, and help all of us better understand which prescription drugs affect health care costs.”

Each of Oregon’s nine insurance companies submitted the drug lists to the division, which reviewed and aggregated them to provide consumers a look at the common prescription drugs that have the biggest effect on health insurance costs.

The Prescription Drug Price Transparency Act (House Bill 4005), from the 2018 Legislative Session, established Oregon’s drug price transparency program. The new law requires prescription drug manufacturers and health insurance companies to report specific drug price information to the division.

Another key component to the program is consumer reporting of price increases. All Oregonians are encouraged to report an increase in the cost of their prescription drugs one of three ways:

The division is excited to bring one of the nation’s first prescription drug price transparency programs to Oregon. Top 25 lists and drug price information from manufacturers is now available by visiting and clicking the Data box.

Later this year, the division will also hold a public hearing and begin providing annual reports to the legislature based on all the information received from manufacturers, health insurers, and consumers.


About DCBS: The Department of Consumer and Business Services is Oregon's largest business regulatory and consumer protection agency. For more information, visit

About Oregon DFR: The Division of Financial Regulation is part of the Department of Consumer and Business Services, Oregon’s largest business regulatory and consumer protection agency. Visit and

​​​​​​​Media questions​

Jason Horton