A boost in biosimilars sales provided only minor consolation to Biogen in 2020, as generic competition to its blockbuster Tecfidera (dimethyl fumarate) multiple sclerosis brand in the US late in the year took a bite out of the company’s annual sales, which fell by 6% to $13.4bn.
Biosimilars Rise Is Cold Comfort For Biogen As Tecfidera Competition Bites
Signals ‘Financial Reset’ In 2021 Due To Dimethyl Fumarate Generics
Biosimilars sales rising by 8% to almost $800m in 2020 failed to offset the impact on Biogen of generic competition to its Tecfidera brand in the US.

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