Money Arthritis drug Humira’s two-decade reign ends as Amgen launches competing biosimilar January 31, 2023 Ken Alltucker, USA TODAY Comments Off on Arthritis drug Humira’s two-decade reign ends as Amgen launches competing biosimilar The price of Amgen's rheumatoid arthritis drug called Amjevita is up to 55% less than the widely-prescribed Humira.